`-3/5 +2x =1/5`
`2x = 1,5 - (-3/5) =15/10 + 6/10`
`2x = 21/10`
`x = 21/10 * 1/2 = 21/20`
Vậy `x=21/20`
`-1,3 +0,35 +(-0,7) +5,65 -2022`
`=(-1,3-0,7) + (0,35 +5,65) -2022`
`=-2 + 6 -2022`
`=4-2022`
`=-2018`
\(-\dfrac{3}{5}+2x=\dfrac{3}{2}\)
\(2x=\dfrac{3}{2}-\left(-\dfrac{3}{5}\right)\)
\(2x=\dfrac{21}{10}\)
\(x=\dfrac{21}{10}
:
2\)
\(x=\dfrac{21}{20}\)
\(-1,3+0,35+\left(-0,7\right)+5,65-2022=\left[-1,3+\left(-0,7\right)\right]+\left(0,35+5,65\right)-2022=-2+6-2022=-2+\left(-2016\right)=-2018\)
\(-\dfrac{3}{5}+2x=1.5\)
\(-0,6+2x=1,5\)
\(2x=-0,6-1,5\)
\(2x=-2,1\)
\(x=-2,1:2\)
\(x=-1,05\)
Tính hợp lí
\(-1,2+0,35+\left(-0,7\right)+5,65-2022\)
= \(\left(-1,3-0,7\right)+\left(0,35+5,65\right)-2022\)
= \(-2+6-2022\)
= \(4-2022\)
= \(-2018\)
