Question

Tell whether each equation is true, false, or open. Explain.

2.) 5x+7 = 17

1.) 85+ (-10) = 95

3.) -8(-2) - 7 = 14 – 5

Answer 1

1.) 85+ (-10) = 95 is false.

2.) 5x+7 = 17 is false.

3.) -8(-2) - 7 = 14 – 5 is false.

Explanation:

1. is false because since 85 ≠ 95, then 85 + ( - 10) = 95 is false.

2. is false because since 12 ≠ 17, then 5x + 7 = 17 is false.

3. is false because since -15 ≠ 14, then -8( - 2) - 7 = 14–5 is false.