Question

LESSON 2-1 PRACTICE

V 13. Attend to precision. Justify each step in the solution of 5x + 15 -

below by stating a property or providing an explanation for each

5x + 15 = 0

5x + 15 – 15 = 0 – 15

5x = -15

x = -3

Answer 1

Value of x is -3

Explanation:

Given:

5x + 15 = 0

Find:

Value of x

Computation:

5x + 15 = 0

From subtracting 15 from both side (LHS and RHS)

5x + 15 – 15 = 0 – 15

5x = -15

From dividing 5 from both side (LHS and RHS)

5x / 5 = -15 / 5

x = -3

So,

Value of x is -3