Question

найдите корень ур-я 8+7(х+2)=1

Answer 1

$8+7(x+2)=1 \\ 8+7x+14=1 \\ 7x=1-22 \\ 7x=-21 \\ x=-3$

Answer 2

8+7х+14=1
7х=1-14-8
7х=-21
х=-21/7
х=-3