12xy {}^{2} +xy {}^{2}z +3xy
​

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

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab