Г)1-5(2-3x)=6 e)5-2(3-x)=11 з)-3-3(3-2х)=1 решите !

Question

Математика: Г)1-5(2-3x)=6 e)5-2(3-x)=11 з)-3-3(3-2х)=1 решите !

milka0121 · Accepted Answer

3 1/3-(4 1/5x+x): 5 4/7= 8/15
3 1/3-4 1/5x-x: 5 4/7= 8/15 4 1/5x-x=3 1/5x
3 1/3-3 1/5x: 5 4/7= 8/15
3 1/3-3 1/5x= 8/15   3 1/3*5 4/7=10/3*39/7=10/1*13/7=130/7=18 4/7
5 4/7   8/15*5 4/7=8/15*39/7=8/5*13/7=104/35=2 34/35
18 4/7-3 1/5x=2 34/35
-3 1/5x=2 34/35-18 4/7 2 34/35-18 4/7=104/35-130/7=104/35-650/35=-546/35=
-3 1/5x=-15 3/5   =-15 21/35=-15 3/5
x=-15 3/5:(-3 1/5) 15 3/5:3 1/5=78/5:16/5=78/5*5/16=39/1*1/8=39/8=4 5/8
x=4 5/8

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