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x+2/3等于7/8

x+(3/8+2/5)=7/8 x=7/8-3/8-2/5 x=1/2-2/5 x=1/10

3/5+2/5x=7/8 解:2/5x=7/8-3/5 2/5x=35/40-24/40 2/5x=11/40 x=11/40*5/2 x=11/16

x加2/7等于2/3解方程。 x+2/7=2/3 x=2/3-2/7 x=2(1/3-1/7) x=2(7/21-3/21) x=8/21

等于7/6

x减7/8减1/4的差等于5/6解:x-(7/8-2/8)=5/6x-5/8=5/6x=5/6+5/8x=20/24+15/24x=35/24行家正解,不明白可以追问!祝您学习进步满意请点击下面的【选为满意回答】按钮,O(∩_∩)O谢谢

7/8-1/3x=2/3 1/3x=7/8-2/3 1/3x=5/24 x=5/24÷1/3 x=5/8

列竖式计算 9.8Ⅹ7.7+9.8X2.3 =9.8x(7.7+2.3) =9.8x10 =98

(x-2/3)×75%=3/8 x-2/3=3/8÷75%=3/8÷3/4=3/8×4/3=1/2 x=1/2+2/3=3/6+4/6=7/6

解:x—3/8=1/2 x=1/2+3/8 x=7/8

(-3/4)X(-8+2/3-1/3) =(-3/4)X(-8+1/3) =(-3/4)X(-8)+(-3/4)X(1/3) =6-1/4 =5又3/4

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