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数学
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70(50-X)+60x=3150求解及步骤
人气:261 ℃ 时间:2020-04-14 06:04:46
解答
70(50-X)+60x=3150
3500-70X+60X=3150
-10x=3150-3500
-10x=-350
10X=350
x=35
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解方程.60x+70(50-x)=3150
60x+70(100-x)=6300
X÷50-3=X÷70+5
x²+(70-x)²=50²
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