解方程.30%x=120x+35%x=240x-60%x=16050%x-33%x=34120x-20x=40x+130%x=460

解方程.30%x=120x+35%x=240x-60%x=16050%x-33%x=34120x-20x=40x+130%x=460.
2024-12-05 03:20:06
推荐回答(1个)
回答1:

(1)30%x=120,
30%x÷30%=120÷30%,
x=400;

(2)x+35%x=240,
1.35x=240,
1.35x÷1.35=240÷1.35,
x=
4800
27


(3)30x-60%x=160,
0.4x=160,
0.4x÷0.4=160÷0.4,
x=400;

(4)50%x-33%x=34,
17%x=34,
17%x÷17%=34÷17%,
x=200;

(5)120x-20x=40,
100%x=40,
x=40;

(6)x+130% x=460,
2.3x=460,
2.3x÷2.3=460÷2.3,
x=200.