Evaluate a - b + c for a = 4 1/5 = 2 7/20 and c = 3 1/4

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?