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15 8 5x 7x 4 3x

15-(8-5x)=7x+(4-3x) 15-8+5x=7x+4-3x 5x-7x+3x=4+8-15 x=-3

15-8+5x=7x+4-3x 7+5x=3x+4 5x-3x=4-7 2x=-3 x=-1.5

5/2x3-7/3x4+9/4x5-11/5x6+13/6x7-15/7x8 =1/2+1/3-1/3-1/4+1/4+1/5-1/5-1/6+1/6+1/7-1/7-1/8 =1/2-1/8 =3/8

解:方程可化为 4(2x+8)=3(5x-15) 8x+32=15x-45 -7x=-77 x=11

^4*8)-4]=x+2 20%+(1-20%)(320-x)=320×40% 2(x-2)+2=x+1 2(x-2)-3(4x-1)=9(1-x) 11x+64-2x=100-9x 15-(8-5x)=7x+(4-3x)...

二百道五年级方程题15-(8-5x)=7x+(4-3x) 3(x-7)-2[9-4(2-x)]=22 3/2[2/3(1/4x-1)-2]-x=2 2(x-2)-...

一元一次方程: 1. 2(x-2)-3(4x-1)=9(1-x) 2. 11x+64-2x=100-9x 3. 15-(8-5x)=7x+(4-3x) 4. 3(x-7)-2[9-4(2-x)]=22 ...

15-(8-5x)=7x+(4-3x) 3(x-7)-2[9-4(2-x)]=22 3/2[2/3(1/4x-1)-2]-x=2 1 2x-10.3x=15 2 0.52x-(1-0.52)x=80 3 x/2+3x/...

3x-7=26 9x-x=16 24x x=50 6/7x-8=4 3x-8=30 6x 6=12 3x-3=1 5x-3x=4 2x 16=19 5x 8=19 14-6x=8 15 6x=27 5-8x=4 7x 8=15 9-...

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