X+x-15*5=2702x=[x+4]*6

Question

X+x-15*5=270
2x=[x+4]*6

Answer 1

2x-15*5=270; 2x=270-75; 2x=195; x=97.5 ответ: 97.5
2x=(x+4)*6; 2x=6x+24; -4x=24; -x=6; x=-6 ответ: -6