0,5(х + 6)+3х =0,5*х+0,5*6+3х=0,5х+3х+3=3,5х+3
1,2(у-3)+0,8у = 1,2*y-1,2*3+0,8y=1,2y+0,8y-3,6=2у-3,6
2,3(у+4)-1,5у=2,3*у+2,3*4-1,5у=2,3у-1,5у+9,2=0,8у-9,2
9,6(2+х)+0,4х=9,6*2+9,6*х+0,4х=9,6х+0,4х+19,2=10х+19,2
3,8(х+5)-1,8х=3,8*х+3,8*5-1,8х=3,8х-1,8х+19=2х+19
1,7(4+у)+1,3у=1,7*4+1,7*у+1,3у=1,7у+1,3у+6,8=3у+6,8