brendahndz8676
10.02.2021 •
Mathematics
— 2x — 6 = 3x — 21
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Ответ:
Step-by-step explanation:
-2x+3x=-21+6
or x=-15
Ответ:
x=3
Step-by-step explanation:
-2x-6=3x-21
Add 21 to both sides of the equation
-2x-6+21=3x-21+21-2x+15=3xAdd 2x to both sides of the equation
-2x+2x+15=3x+2x15=5xDivide each side by 5 to isolate x
15÷5=5x÷53=xОтвет: