a)14x-(8x+3x)=1512
14x-8x-3x=1512
2x=1512
x=756
б)11y-(5y-3y)=8136
11y-5y+3y=8136
9y=8136
y=904
14х-(8х+3х)=1512
14х-11х=1512
3х=1512
х=1512:3
х=504
проверка:
14 х 504-(8х504+3х504)=1512
11у-(5у-3у)=8136
11у-2у=8136
9у=8136
у=8136:9
у=904
11х904-(5х904-3х904)=8136
a)14x-(8x+3x)=1512
14x-8x-3x=1512
2x=1512
x=756
б)11y-(5y-3y)=8136
11y-5y+3y=8136
9y=8136
y=904
14х-(8х+3х)=1512
14х-11х=1512
3х=1512
х=1512:3
х=504
проверка:
14 х 504-(8х504+3х504)=1512
11у-(5у-3у)=8136
11у-2у=8136
9у=8136
у=8136:9
у=904
проверка:
11х904-(5х904-3х904)=8136