Question

What is the solution set for the open sentence, using the given replacement set ? 5x−7=8 ; {1, 2, 3, 4} ? x = 1 x = 2 x = 3 x = 4

Answer 1

X=3

Explanation:

I took the test

Answer 2

x = 3

Explanation:

5x−7=8

Add 7 to each side

5x-7+7 = 8+7

5x = 15

Divide by 5

5x/5 = 15/5

x=3