方程1.5X×0.9-50-X=370 .
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方程1.5X×0.9-50-X=370.方程1.5X×0.9-50-X=370.方程1.5X×0.9-50-X=370.这道题的正确答案是:1.5x*0.9-50-x=3701.35x-x=370+5
方程1.5X×0.9-50-X=370 .
方程1.5X×0.9-50-X=370 .
方程1.5X×0.9-50-X=370 .
这道题的正确答案是:
1.5x*0.9-50-x=370
1.35x-x=370+50
0.35x=420
x=420/0.35
x=1200
1.5X×0.9-50-X=370
1.35x-x=370+50
0.35x=420
x=1200