# McGraw Hill Math Grade 8 Lesson 13.4 Answer Key Solving 2-Step Equations

Practice the questions of McGraw Hill Math Grade 8 Answer Key PDF Lesson 13.4 Solving 2-Step Equations to secure good marks & knowledge in the exams.

## McGraw-Hill Math Grade 8 Answer Key Lesson 13.4 Solving 2-Step Equations

Exercises

SOLVE

Question 1.
10x – 7 = 23
x = 3,

Explanation:
Given to solve 10x – 7 = 23,
So 10x = 23 + 7 = 30,
x = 30 ÷ 10 = 3.

Question 2.
14 = 12 + 2x
x = 1,

Explanation:
Given to solve 14 = 12 + 2x,
So 2x = 14 – 12 = 2,
x = 2 ÷ 2 = 1.

Question 3.
21 + 4x = 28
x = 1.75,

Explanation:
Given to solve 21 + 4x = 28,
So 4x = 28 – 21 = 7,
x = 7 ÷ 4 = 1.75.

Question 4.
200 + 15x = 425
x = 15,

Explanation:
Given to solve 200 + 15x = 425,
So 15x = 425 – 200 = 225,
x = 225 ÷ 15 = 15.

Question 5.
5x + 39 = 41
x = 0.4,

Explanation:
Given to solve 5x + 39 = 41,
So 5x =41 – 39 = 2,
x = 2 ÷ 5 = 0.4.

Question 6.
10z + 17 = 77
z = 6,

Explanation:
Given to solve 10z + 17 = 77,
So 10z = 77 – 17 = 60,
z = 60 ÷ 10 = 6.

Question 7.
65 = 41 + 3x
x = 8,

Explanation:
Given to solve 65 = 41 + 3x,
So 3x = 65 – 41 = 24,
x = 24 ÷ 3 = 8.

Question 8.
107 = 75 + 16r
r = 2,

Explanation:
Given to solve 107 = 75 + 16r,
So 16r = 107 – 75 = 32,
r = 32 ÷ 16 = 2.

Question 9.
49 + 18d = 37
d = -0.666,

Explanation:
Given to solve 49 + 18d = 37,
So 18d = 37 – 49 = -12,
d = 12 ÷ 18 = -0.666.

Question 10.
15b + 18 = 30
b = 0.8,

Explanation:
Given to solve 15b + 18 = 30,
So 15b = 30 – 18 = 12,
b = 12 ÷ 15 = 0.8.

Question 11.
5q = 10q + 60
q = -12,

Explanation:
Given to solve 5q = 10q + 60,
So 10q – 5q = -60,
q = -60 ÷ 5 = -12.

Question 12.
2f + 4f + 18 = 32
f = 2.3333,

Explanation:
Given to solve 2f + 4f + 18 = 32,
So 6f = 32 – 18 = 14,
f = 14 ÷ 6 = 2.3333.

Question 13.
3j = 5j – 14
j = 7,

Explanation:
Given to solve 3j = 5j – 14,
So 5j – 3j = 14,
j = 14 ÷ 2 = 7.

Question 14.
23 + 18r = 6r + 47
r = 2,

Explanation:
Given to solve 23 + 18r = 6r + 47,
So 18r – 6r = 47 – 23,
12r = 24,
r = 24 ÷ 12 = 2.

Question 15.
13k + 14k + 10 = 13
k = 0.1111,

Explanation:
Given to solve 13k + 14k + 10 = 13,
So 27k = 13 – 10 = 3,
k = 3 ÷ 27 = 0.1111.

Question 16.
14v = 10v – 5