1.х+3х=356 2.х=5-148 3.4х+114+х+х=456 4.3х+5(х-68)=316 5.7х-38=х-14+78

1. x+3x=4x 4x=356 x=356/4=89
2/ x=5-148 x=-143
3/ 4x+114+x+x=456 4x+x+x=456-114 6x=352 x=342/6 x=47
4/ 3x+5(x-68)=316 3x+5x-340=316  8x=656 x=656/8 x=82
5/ 7x-38=x-14+78 7x-x=-14+78+38 6x=102 x=47

1)4х=356
х=89
2)х=-143
3)6х=342
х=57
4)8х=656
х=82
5)6х=102
х=17