方程的~计算的,一道一道的解答,不能直接写上答案30%x=120x-60%x=160120x-20x=40x+1/5x=24050%x-33%x=34x+130%x=460

Question

方程的~计算的,一道一道的解答,不能直接写上答案
30%x=120
x-60%x=160
120x-20x=40
x+1/5x=240
50%x-33%x=34
x+130%x=460

Answer 1

30%x=120 x=120÷30%=120x100/30=400
x-60%x=160 40%x=160 x=160÷40%=160x100/40=400
120x-20x=40 100x=40 x=40÷100=40%
x+1/5x=240 6/5x=240 x=240÷6/5=240x5/6=200
50%x-33%x=34 17%x=34 x=34÷17%=34x100/17=200
x+130%x=460 230%x=460 x=460÷230%=460x100/230=200