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The solution of the equation 3x + 7 = -20 is
(a) 17/7
(b) - 9
(c) 9
(d) 13/3

Solution:

Let’s solve the equation to find out the correct option.

The given equation is 3x + 7 = -20

3x = -20 - 7

x = -27/3

x = -9

Hence out of the four options, the correct option is (b) -9

✦ Try This: The solution of the equation 3x - 2 = -20 is (a) 18, (b) -6, (c) 20/3, (d) 6

The given equation is 3x - 2 = -20

3x = - 20 + 2

x = -18/3

x = -6

Hence out of the four options, the correct option is (b) -6

☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 4

NCERT Exemplar Class 7 Maths Chapter 4 Problem 7

The solution of the equation 3x + 7 = -20 is (a) 17/7, (b) - 9, (c) 9, (d) 13/3

Summary:

Hence out of the four options, the correct option is (b) -9

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