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x除以3+2×4等于25用方程解答.

x÷3/2=9/4 y:x÷3/2×3/2=9/4×3/2 x=27/8

x=15/4 4*4-1/2(3.14*2²)=9.72 20*20-3.14*10²=86

2/3x÷1/4=12 2/3x÷1/4×1/4=12×1/4 2/3x=3 2/3x÷2/3=3÷2/3 x=9/2

3-(x+2)=4(x+1), 3-x-2=4x+4, 5x=-3, x=-3/5

解: X+2/3-5/4=4 X=4+5/4-2/3 X=4+15/12-8/12 X=4+7/12 X=4又7/12

4×(x+2.25)÷3=24       x+2.25=18             x=15.75

4分之1+25%X=2分之3 解:25%X=2分之3-4分之1 25%X=4分之5 X=4分之5÷25% X=5

解:x+1/4+3/5=3.25x+0.25+0.6=3.25x+0.85=3.25x+0.85-0.85=3.25-0.85x=2.4

x=3/2÷3/4 x=3/2×4/3 x=2

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