tìm x
a,1/3-(1/2-X)=1/5
b,2/3-(1/2-X x 1/3=1/4
c,5/2-(1/3+X x 1/2=1
(x là nhân nhé)
tìm x a,1/3-(1/2-X)=1/5 b,2/3-(1/2-X x 1/3=1/4 c,5/2-(1/3+X x 1/2=1 (x là nhân nhé)
By Peyton
By Peyton
tìm x
a,1/3-(1/2-X)=1/5
b,2/3-(1/2-X x 1/3=1/4
c,5/2-(1/3+X x 1/2=1
(x là nhân nhé)
Đáp án:
Giải thích các bước giải:
`a,1/3-(1/2-x)=1/5`
`<=>1/2-x=2/15`
`<=>x=11/30`
Vậy `x=11/30`
`b,2/3-(1/2-x * 1/3)=1/4`
`<=>1/2-x*1/3=5/12`
`<=>1/3x=1/12`
`<=>x=1/4`
Vậy `x=1/4`
`c,5/2-(1/3+x * 1/2)=1`
`<=>1/3+x*1/2=3/2`
`<=>1/2x=7/6`
`<=>x=7/3`
Vậy `x=7/3`