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oksian1 [2.3K]
3 years ago
9

12-3 (2w+1)=7w-3 (7+w)

Mathematics
2 answers:
alina1380 [7]3 years ago
8 0
12-3(2w+1)=7w-3(7+w)\\\\
12-6w-3=7w-21-3w\\\\
-6w-7w+3w=-21-12+3\\\\
-10w=-30\ \ \ |Divided\ by\ -10\\\\
w=3\\\\ \textbf{Answer\ is\ w=3.}
n200080 [17]3 years ago
3 0
12-3(2w+1)=7w-3(7+w) \\ \\ 12-6w-3=7w-21-3w \\ \\ 9-6w=4w-21 \\ \\ -6w-4w=-21-9 \\ \\ -10w=-30 \\ \\ \boxed{x=\frac{-30}{-10}=3}
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