-362
step-by-step explanation:
(12)(4)+2(12)-34(12)+2(12)-3
\/ \/ \/ \/
48 + 24 - 408 + 24 - 3
\ / \ /
72 - 432 - 3 = -363
-2x + 7 = 7
subtract 7 from both sides.
-2x = 0
divide both sides by -2.
x = 0