Найдите значение выражения
1) 3(а+2в)-а при а+3в=1,1
2) 2,4(3х+5у)-4у при 0,9х+у=2
3) 8(0,5а+3в)+8а при а+2в=2,5
4) 3(0,6м+5н)-3н при 0,3м+2н=4
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