5(2x-3)+9(10x-8)=213解方程

2025-02-25 22:28:23
推荐回答(1个)
回答1:

5(2x-3)+9(10x-8)=113
10x-15+90x-72=113
100x=200
x=2
15(3x-4)=100-35x
45x-60=100-35x
80x=160
x=2
43-2(5+3x)=3+6(x-1)
43-10-6x=3+6x-6
36=12x
x=3
(19-2x)÷5=x+1
19-2x=5(x+1)
19-2x=5x+5
14=7x
x=2
15(3x+4)=100-35x
45x+60=100-35x
80x=40
x=0.5