Реш уравнения
1)4(х-3)-3(х+2)=-19
2)2'5(4-2х)-5(1-3х)=5
3)-5(7-х)-4(х-8)=3
4)2/3(3х-1)-1/9(9х-9/4)=1/4
1)4(х-3)-3(х+2)=-19
2)2'5(4-2х)-5(1-3х)=5
3)-5(7-х)-4(х-8)=3
4)2/3(3х-1)-1/9(9х-9/4)=1/4
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Answers & Comments
4x-12-3x-6=-19
x-18=-19
x=-19+18
x=-1
2)2,5(4-2x)-5(1-3x)=5
10-5x-4+15x=5
5+10x=5
10x=0
x=0
3)-5(7-x)-4(x-8)=3
-35+5x-4x+32=3
-3+x=3
x=3+3
x=6
4)2/3(3x-1)-1/9(9x-9/4)=1/4
2x-2/3-x+1/4=1/4
2x-2/3-x=0
x-2/3=0
3x-3×2/3=3×0
3x-2=0
3x=2
x=2/3