5%X+(500-X)×4%=23.5这个方程怎么解
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5%X+(500-X)×4%=23.5这个方程怎么解5%X+(500-X)×4%=23.5这个方程怎么解5%X+(500-X)×4%=23.5这个方程怎么解5%X+(500-X)×4%=23.5即5%
5%X+(500-X)×4%=23.5这个方程怎么解
5%X+(500-X)×4%=23.5这个方程怎么解
5%X+(500-X)×4%=23.5这个方程怎么解
5%X+(500-X)×4%=23.5
即5%X+500×4%-X×4%=23.5
即5%X-X×4%=23.5-500×4%=23.5-20=3.5
即1%X=3.5
即1/100X=3.5
即X=350
1%X=23.5-20
x=500
5%X+(500-X)×4%=23.5
5%x+20-4%x=23.5
5%x-4%x=23.5-20
1%x=3.5
x=3.5÷1%
x=350
4%=0.04
0.05x+20-0.04x=23.5
0.01x=3.5
x=350
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写过程x(x-1)+2x(x+1)-3x(2x-5)-x(3x-2)+2x(2-x)=-5x(x-2)-4
*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
x-x/4=x/4+4x/5-30.
x-3/4x=(108-x)-4/5x