How do you do this problem ?

0 ⤊

Solve the equation. Don't forget to first simplify each side of the equation, if possible.
-4a + 3 + 5a = 12 - 21

-36
-12
36
12

2007-06-18 10:00:55 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

-4(-12) + 3 + 5(-12) = -9
48 + 3 - 60 = -9

-12

2007-06-18 10:09:02 · answer #1 · answered by Anonymous · 0⤊ 0⤋

-12
(1) get unknowns on one side of the "=" and constants onthe other side.
(2) combine like terms, such as -4a and 5a.

2007-06-18 17:06:30 · answer #2 · answered by cattbarf 7 · 0⤊ 0⤋