6(x+2)+3(3x+7)=4(5+4x)-7 срочно

Question

6(x+2)+3(3x+7)=4(5+4x)-7 срочно

Comments

6х+12+9х+21=20+16х-7

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6х+9х-16х=20-7-21-12

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спосибо

Answer 1

6х+12+9х+21=20+16х-7
6х+9х-16х=20-12-21-7
15х-16х=8-21-7
-х=-20
х=20