解方程。2x+3乘以0.9=24.7。4分之3:x=5分之2:24

2025-04-06 08:29:20
推荐回答(2个)
回答1:

2x+3×0.9=24.7
2x=24.7-3×0.9=22
x=11

(3/4):x=(2/5):24
(2/5)x=(3/4)×24=18
x=18×5/2=45

回答2:

2X+3x0.9=24.7
解:2X+2.7=24.7
2X=24.7-2.7
2X=22
X=11

3/4:X=2/5:24
解:3/4x1/X=2/5x1/24
1/X=1/60÷3/4
1/X=1/60x4/3
1/X=1/45
X=45