18(x+14)=378 16(4x-26)=224 9(152-7x)=927
18х+252=378 18х=378-252 18х=126 х=7 64х-416=224 64х=224+416 64х=640 х=10 1368-63х=927 -63х=927-1368 -63х=-441 х=7