50а-(70-100а)+(90-75а)•2=

Question

50а-(70-100а)+(90-75а)•2=

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Answer 1

50а -(70-100а)+(90-75а)*2 = 50а -70+100а +180- 150а=
= (50а+100а-150а) +(180-70)= 110

Answer 2

50а-(70-100а)+(90-75а)*2=50а-70+100а+180-150а=110