1.5x+20=14x-61
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1.5x+20=14x-61
2.2x-2=10x-66
3.9+12X = 119+X
4.3x+12=75-6x
5.76-4x=7x+21
6.-32 - 5x=13-10x
7.152-4x= 6x+22
8.2x+10 = -90-8x
9.-151-9x=10x+20
10.10-9x= 135-44x
11.250-7x=38x+15
2.2x-2=10x-66
3.9+12X = 119+X
4.3x+12=75-6x
5.76-4x=7x+21
6.-32 - 5x=13-10x
7.152-4x= 6x+22
8.2x+10 = -90-8x
9.-151-9x=10x+20
10.10-9x= 135-44x
11.250-7x=38x+15
1.5x+20=14x-61 (5-14)x=-61-20 -9x=-81 x=9
2.2x-2=10x-66 (2-10)x=-66+2 -8x=-62 x=31/4
3.9+12X = 119+X (12-1)x=119-9 11x=110 x=10
4.3x+12=75-6x (3+6)x=75-12 9x=63 x=7
5.76-4x=7x+21 -11x=-55 x=5
6.-32 - 5x=13-10x 5x=45 x=9
7.152-4x= 6x+22 -10x=-130 x=13
8.2x+10 = -90-8x 10x=-100 x=-10
9.-151-9x=10x+20 -19x=171 x=-9
10.10-9x= 135-44x (44-9)x=135-10 35x=125 x=25/7
11.250-7x=38x+15 -45x=-235 x=47/9
2.2x-2=10x-66 (2-10)x=-66+2 -8x=-62 x=31/4
3.9+12X = 119+X (12-1)x=119-9 11x=110 x=10
4.3x+12=75-6x (3+6)x=75-12 9x=63 x=7
5.76-4x=7x+21 -11x=-55 x=5
6.-32 - 5x=13-10x 5x=45 x=9
7.152-4x= 6x+22 -10x=-130 x=13
8.2x+10 = -90-8x 10x=-100 x=-10
9.-151-9x=10x+20 -19x=171 x=-9
10.10-9x= 135-44x (44-9)x=135-10 35x=125 x=25/7
11.250-7x=38x+15 -45x=-235 x=47/9
x-30%x=14x+25%x=20
20+0.8x=x-14 112-4x=2x(80-4x)
(x-22)+(x-24)+(x-27)+(x-20)=x
1.5X+20=1X(50-X)怎么算?
解方程:20%X+30%X=2.5; X-14
解方程:x+20=1.5x
1.5X*80%=X+20 方程
9x+14×(20-x)=220
x-10=4(x-28) 3(x-28)=x+56+28 2(1.5x-30-20)=x 2(2x-20-45)=x-1
解系数为整数的一元一次方程 56-8X=11+X 3X-2=X+1+6X 7+X=2X+20-14X
已知x-4/x=6,求代数式2x²-20x/x²-14x+4除(1-x-12/2-x)的值
(x+2005)/ (x+2004)+(x+2007)/(x+2006)=(x+2008)/(x+2007)+(x+20