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10.02.2020 •
Mathematics
What does -3(x+2y)+4(3x-6y) equal to?
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Ответ:
9x-30y
Step-by-step explanation:
-3(x+2y)+4(3x-6y)
-3x-6y+12x-24y
-3x+12x-6y-24y
9x-6y-24y
9x-30y
Ответ:
c = 14
Step-by-step explanation:
To solve for a variable, you want to isolate it (make it on one side of the equation, meaning you want to get rid of the -4). To get rid of the negative, you would add 4. But what you do to one side of the equation you must do to the other. So add 4 to both sides, leaving you with c = 14