Question

Решите уравнения :
9(х+7)=х
-3(1+4х)=-4х-5

Answer 1

9(х+7)=х
9х+63=х
9х-х=-63
8х=-63
х=-63:8
х=7 98

Answer 2

7 7/8

Answer 3

9(x+7)=x
9x+63=x
8x=-63
x=-7и7/8

-3(1+4x)=-4x-5
-3-12x=-4x-5
-8x=-2
X=1/4