Question

№877(3)   помогите решить ЛИНЕЙНЫМ УРАВНЕНИЕМ 

Answer 1

1) умножить все на 24
2) 9(2x+5)-16(5x+7)=42(x-15)-165
18x+45-80x-112=42x-630-165
18x-80x-42x=112-45-630-165
-104x=-728
x=7

Answer 2

\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\