(a) 3l = 42

(b) b/2= 6

(c) p/7=4

(d) 4x =25

(e) 8y=36

(f) z/3=5/4

(g) a/5=7/15

(h) 20t=-10

Answer :

(a) 3I =42

Or, I=42/3 = 14

(b) b/2 = 6

Or, b=6×2=12

(c) p/7 = 4

Or, p= 4×7 = 28

(d) 4x=25

Or, x=25/4

(e) 8y=36

Or, y= 36 /8 = 36 ÷4/8÷4 = 9/2

(f) z/3= 5/4

Or, z= (5/4) ×3 =15/4

(g) a/5=7/15

Or, a= (7/15)× 5 =7/3

(h) 20t = -10

Or, t = -10 /20 = -1/2

- Q.1 Given first the step you will use to separate the variable and then solve the equation: (a) x – 1 = 0 (b) x + 1 = 0 (c) x – 1 = 5 (d) x + 6 = 2 (e) y – 4 = -7 (f) y -4 = 4 (g) y + 4 = 4 (h) y + 4 = -4
- Q.3 Give the steps you will use to separate the variables and then solve the equation: (a) 3n – 2 = 46 (b) 5m + 7 = 17 (c) 20p/3=40 (d) 3p/10=6
- Q.4 Solve the following equations: (a) 10p = 100 (b) 10p + 10 = 100 (c) p/4=5 (d) -p/3=5 (e) 3p/4=6 (f) 3s = -9 (g) 3s + 12 = 0 (h) 3s = 0 (i) 2q = 6 (j) 2q – 6 = 0 (k) 2q + 6 = 0 (l) 2q + 6 = 12

- NCERT solutions for class 7 maths chapter 1 Integers
- NCERT solutions for class 7 maths chapter 2 Fractions and Decimals
- NCERT solutions for class 7 maths chapter 3 Data Handling
- NCERT solutions for class 7 maths chapter 4 Simple Equations
- NCERT solutions for class 7 maths chapter 5 Lines and Angles
- NCERT solutions for class 7 maths chapter 6 The Triangle and its Properties
- NCERT solutions for class 7 maths chapter 7 Congruence of Triangles
- NCERT solutions for class 7 maths chapter 8 Comparing Quantities
- NCERT solutions for class 7 maths chapter 9 Rational Numbers
- NCERT solutions for class 7 maths chapter 10 Practical Geometry
- NCERT solutions for class 7 maths chapter 11 Perimeter and Area
- NCERT solutions for class 7 maths chapter 12 Algebraic Expressions
- NCERT solutions for class 7 maths chapter 13 Exponents and Powers
- NCERT solutions for class 7 maths chapter 14 Symmetry
- NCERT solutions for class 7 maths chapter 15 Visualising Solid Shapes

- NCERT solutions for class 7 science chapter 1 Nutrition in Plants
- NCERT solutions for class 7 science chapter 2 Nutrition In Animals
- NCERT solutions for class 7 science chapter 3 Fibre to Fabric
- NCERT solutions for class 7 science chapter 4 Heat
- NCERT solutions for class 7 science chapter 5 Acids Bases and Salts
- NCERT solutions for class 7 science chapter 6 Physical and Chemical Changes
- NCERT solutions for class 7 science chapter 7 Weather, Climate and Adaptations of Animals to Climate
- NCERT solutions for class 7 science chapter 8 Winds, Storms and Cyclones
- NCERT solutions for class 7 science chapter 9 soil
- NCERT solutions for class 7 science chapter 10 Respiration in Organisms
- NCERT solutions for class 7 science chapter 11 Transportation in Animals and Plants
- NCERT solutions for class 7 science chapter 12 Reproduction In Plant
- NCERT solutions for class 7 science chapter 13 Motion and Time
- NCERT solutions for class 7 science chapter 14 Electric Current and Its Effects
- NCERT solutions for class 7 science chapter 15 Light
- NCERT solutions for class 7 science chapter 16 Water: A Precious Resource
- NCERT solutions for class 7 science chapter 17 Forests: Our Lifeline
- NCERT solutions for class 7 science chapter 18 Waste Water Story