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5x+5×2.5=20解方程

你好~楼主 5x+5×2.5=20 解 5x+12.5=20 5x=20-12.5 5x=7.5 x=7.5÷5 x=1.5 很高兴为你解答,祝你学习进步,如红日升起般蒸蒸日上, ~在下有一个小小请求,请轻轻点击“采纳为满意回答” ~我帮你答题,你帮我采纳 ~你的肯定是我回答的动力。你的支持...

5x+16=20.5 5x+16-16=20.5-16 5x=4.5 5x÷5=4.5÷5 x=0.9

2.5➗(5x-5)=5 5(5x-5)=2.5 5x-5=0.5 5x=5.5 x=1.1

5x+5=105 5x+5-5=105-5 5x=100 5x/5 =100/5 x=20

5x+5(5-2x)=5 去括号:5x+25-10x=5 移项得:5x-10x=5-25 合并得:-5x=-20 化为系数1:x=4

(1)解:去括号得:2x+2=-3x+12,移项合并得:5x=10,解得:x=2;(2)解:方程变形为5x?152-10x+205=2.5,去分母得:5(5x-15)-2(10x+20)=25,去括号得:25x-75-20x-40=25,移项合并得:5x=140,解得:x=28.

(1)5x-2.4×5=8, 5x-12+12=8+12, 5x=20, 5x÷5=20÷5, x=4,(2)x5+34x=38×2, 1920x=34, 1920x×2019=34×2019, x=1519.

5x:2.5=5怎么解方程 解:5x:2.5=5 5x=5*2.5 x=5*2.5÷5 x=2.5

(1)5.4+2x=8.6, 5.4+2x-5.4=8.6-5.4, 2x=3.2, 2x÷2=3.2÷2, x=1.6;(2)2.5:5=x:8, 5x=2.5×8, 5x=20, 5x÷5=20÷5, x=4;(3)0.2=1-x24, 0.2+x24=1-x24+x24, 0.2+x24=1,0.2-0.2+x24=1-0.2, x24=0.8, x=0.8×24, x=19.2;(4)34...

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