Explanation:
So
-4 * 3x = -12x
-4*1 = -4
Equation: -12x + -4 + x -3 = 15
move -12x and x to the other side, and 15 to the other/
Equation: -4+ (-3)-15 = 12x - x
simplified: -22=11x
x= -22 divided by 11
x= -2
Answer:
x = -2
-4(3x +1) = -12x - 4
-12x - 4 + x - 3 = 15
+4 +4
-12x + x - 3 = 19
-11x - 3 = 19
+3 +3
-11x = 22
22 / -11 = -2
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