26.4x+18x=66.6 0.5×6+3x=4.8 2.5x-6=18.5 x-12.56=15.7 3.6+5.4

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26.4x+18x=66.6 0.5×6+3x=4.8 2.5x-6=18.5 x-12.56=15.7 3.6+5.4x=27
3.6×5-0.5x=8.5

26.4x+18x=66.6
44.4x=66.6
x=66.6÷44.4
x=1.5
0.5×6+3x=4.8
3+3x=4.8
3x=4.8-3
3x=1.8
x=1.8÷3
x=0.6
2.5x-6=18.5
2.5x=18.5+6
2.5x=24.5
x=24.5÷2.5
x=9.8
x-12.56=15.7
x=15.7+12.56
x=28.26
3.6+5.4x=27
5.4x=27-3.6
5.4x=23.4
x=23.4÷5.4
x=13/3
3.6×5-0.5x=8.5
18-0.5x=8.5
0.5x=18-8.5
0.5x=9.5
x=9.5÷0.5
x=19

26.4x+18x=66.6 0.5×6+3x=4.8 2.5x-6=18.5 x-12.56=15.7 3.6+5.4 已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值 x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 计算1/[x(x+3)]+1/[(x+3)(x+6)]+.+1/[(x+15)(x+18)]=? x-o.8x=6 12x-8x=4.8 3x-8=16 7.5x-2x x-0.7x=3.6 求答案 2x+3x+4x+5x+x+6x+7x=100 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) （X+X)+(X-X)+(X*X)+(X/X)=100 已知3x*x-x=1,求6x*x*x+7x*x-5x+2000 1/x(x+3)+1/(x+3)(x+6)+1/(x+6)(x+9)=3/2x+18 X(x+3)分之一+(X+3)(X+6)分之一+(X+6)(X+9)分之一=2x+18分之三 1、0.3X-0.4X=0.5 2、5X-2.5X+3.5X=-18 3、X-2/5X=-3+6