Question

Solve what is the answer
-2z+3+7z=-12

Answer 1

-2z+3+7z=-12
⇒ (-2z+ 7z)+ 3= -12 (combine like terms)
⇒ 5z+ 3= -12
⇒ 5z= -12 -3
⇒ 5z= -15
⇒ z= -15/5
⇒ z= -3

Final answer: z= -3.