Im trying to figure out how to do this 3t-7=5t, then 6t= i want to know how they get the answer -21

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

The distributive property allows you to say that 3(x − 1) = 3x −

Will give a: 122 b: 90 c: 48 d: 180