(8-x)×2+4x=20用方程解

2024-12-04 21:59:13
推荐回答(4个)
回答1:

(8-x)×2+4x=20
16-2x+4x=20
2x=20-16
2x=4
x=4/2
x=2

回答2:

(8-x)×2+4x=20
8*2-x*2+4x=20
16-2x+4x=20
16+2x=20
2x=20-16=4
x=2

回答3:

(8-x)×2+4x=20
8*2-2x+4x=20
4x-2x=20-16
2x=4
x=2

回答4:

(8-x)×2+4x=20
16-2x+4x=20
2x=4
x=2