Раскройте скобки и приведите подобные слагаемые3(х-7)+5х5(4-3х)+8х(у-4)*2+10у(2у+5)*4-11у4х+2(0,5х+3)6х-3(х-7)
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3(х-7)+5х=3х-21+5х=8х-215(4-3х)+8х=20-15х+8х=20-7х
(у-4)*2+10у=2у-8+10у=12у-8
(2у+5)*4-11у=8у+20-11у= -3у+20
4х+2(0,5х+3) = 4х+х+6=5х+6
6х-3(х-7) = 6х-3х+21=3х+21