1/6х=45-18+12
1/6х=45-18+121/6х=45-30
1/6х=45-18+121/6х=45-301/6х=15
1/6х=45-18+121/6х=45-301/6х=15х=90
7y=91
7y=91y=13
x+40=72
x+40=72x=72-40
x+40=72x=72-40x=32
1/6х=45-18+12
1/6х=45-18+121/6х=45-30
1/6х=45-18+121/6х=45-301/6х=15
1/6х=45-18+121/6х=45-301/6х=15х=90
7y=91
7y=91y=13
x+40=72
x+40=72x=72-40
x+40=72x=72-40x=32