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ikramchik2005
@ikramchik2005
July 2022
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Упростите выражение, используя распределительное свойство умножения:
А) 16(а+2b-5)-16a;
B)5(13a+14)+3(15a-8);
C)(17a-5b+4)x12-(4a+7b+1)x27;
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незнайка917
А)16(а+2b-5)-16a=16a+2b-80-16a=2b-80
в)5(13а+14)+3(15а-8)=65а+70+45а-24=110а+46
с)(17а-5b+4)×12-(4a+7b+1)×27=204a-60b+48-108a-189b-27=96a-249b+21
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Thanks 1
velichkova1996
А) 16(а+2b-5)-16a=(16a+16*2b-5*16)-16a=16a+32b-80-16a=32b-80
b)5(13a+14)+3(15a-8)=65a+70+45a-24=110a+46
c)(17a-5b+4)*12-(4a+7b+1)*27=204a-60b+48-(108a+189b+27)=204a-60b+48-108a-189b-27=96a-249b+21
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Answers & Comments
в)5(13а+14)+3(15а-8)=65а+70+45а-24=110а+46
с)(17а-5b+4)×12-(4a+7b+1)×27=204a-60b+48-108a-189b-27=96a-249b+21
b)5(13a+14)+3(15a-8)=65a+70+45a-24=110a+46
c)(17a-5b+4)*12-(4a+7b+1)*27=204a-60b+48-(108a+189b+27)=204a-60b+48-108a-189b-27=96a-249b+21