4(x+3)=49-(x-3)      6x=-2+7x     2(y-5)+7=1

4(x+3)=49-(x-3)4x+12-49+x-3=05x=40x=8-----------------------------------6x=-2+7x  -x=-2x=2--------------------------------2(y-5)+7=12y-10+7-1=02y=4y=2==============================

4(х+3)=49-(х+3)4х+12=49-х+34х+х=49-12+35х=40х=40:5х=8Ответ:8.6х= -2+7х6х-7х=-2-х=-2х=2Ответ:22(у-5)+7=12у-10+7=12у=10-7+12у=4у=4:2у=2Ответ:2.