Решите уравнения! 5х+7+2х+14=42, 16+3х+2+х=38, 3х+12-х-1=53, 9х+55+х-15=130,19х+25-2х+9=34

5х+7+2х+14=427х+21=427х=42-217х=21х=21/7х=316+3х+2+х=384х+18=384х=38-184х=20х=20/4х=53х+12-х-1=532х+11=532х=53-112х=42х=42/2х=219х+55+х-15=13010х+40=13010х=130-4010х=90х=90/10х=919х+25-2х+9=3417х+34=3417х=34-3417х=0х=0/17х=0