x-18.6+9.4=17.5 1.5x=1.8 42÷(x+5)=3 3x-37.5=25.5 13.2x=8.6x+9.2×3 4.2×2.5+2x=24.5解方程 帮哈忙

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x-18.6+9.4=17.51.5x=1.842÷(x+5)=33x-37.5=25.513.2x=8.6x+9.2×34.2×2.5+2x=24.5解方程帮哈忙x-18.6+9.4=17.51.5

x-18.6+9.4=17.5 1.5x=1.8 42÷(x+5)=3 3x-37.5=25.5 13.2x=8.6x+9.2×3 4.2×2.5+2x=24.5解方程 帮哈忙
x-18.6+9.4=17.5 1.5x=1.8 42÷(x+5)=3 3x-37.5=25.5 13.2x=8.6x+9.2×3 4.2×2.5+2x=24.5
解方程 帮哈忙

x-18.6+9.4=17.5 1.5x=1.8 42÷(x+5)=3 3x-37.5=25.5 13.2x=8.6x+9.2×3 4.2×2.5+2x=24.5解方程 帮哈忙
x-18.6+9.4=17.5
x=17.5+18.6-9.4
x=26.7
1.5x=1.8
x=1.2
42÷(x+5)=3
42=3x+15
3x=27
x=9
3x-37.5=25.5
3x=63
x=21
13.2x=8.6x+9.2×3
4.6x=27.6
x=6
4.2×2.5+2x=24.5
2x=24.5-10.5
2x=14
x=7