упростите выражение
A) 5х-(3+4х)
Б) -(2а+7)-5а
В) 2(3y+5)-6(3-2y)
Г) 5(6-b)+8(3b+2)
A) 5х-(3+4х)
Б) -(2а+7)-5а
В) 2(3y+5)-6(3-2y)
Г) 5(6-b)+8(3b+2)
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Answers & Comments
А) 5х-(3+4х)=5х-3-4х=х-3
Б) -(2а+7)-5а=-2а-7-5а=-7а-7
В) 2(3у+5)-6(3-2у)=6у+10-18+12у=18у-8
Г) 5(6-в)+8(3в+2)= 30-5в+24в+16=19в+46
Б)-7a-7
В)18y-8
Г)19b+46