解方程或比例. 4x+3×0.7=6.5 x:8= 3 4 : 6 5 x- 3 5 x=
解方程或比例.4x+3×0.7=6.5x:8=34:65x-35x=35....
解方程或比例. 4x+3×0.7=6.5 x:8= 3 4 : 6 5 x- 3 5 x= 3 5 .
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根据题意可得: (1)4x+3×0.7=6.5, 4x+2.1=6.5, 4x+2.1-2.1=6.5-2.1, 4x=4.4, 4x÷4=4.4÷4, x=1.1;
(2)x:8= : , x=8× , x=6, x÷ =6÷ , x=5;
(3)x- x= , x= , x÷ = ÷ , x= . |
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