Упростить выражения(2/5 и 3/4-дроби):
-15(6х – 4) +(12х-18) – (2+х)
2/5*( 15х – 4) – 2(3х – 9) + 3/4х - 6/7
-15(6х – 4) +(12х-18) – (2+х)
2/5*( 15х – 4) – 2(3х – 9) + 3/4х - 6/7
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Ответ:
Пошаговое объяснение:
-15(6х – 4) +(12х-18) – (2+х)=-90х+60+12х-18-2-х=-79х+40
2/5*( 15х – 4) – 2(3х – 9) + 3/4х - 6/7=6х-8\5-6х+18+3\4х-6\7=3\4х+(8-8\5-6\7)
3\4х+(8-1 21\35-30\35)=3\4х + 5 19\35