2+3(8-X)=2(2X-15) X＝?

1个回答

（-5/12)x8/15x3/2x(-2/3)x0x(-1)= (-1)x(-5/4)x8/15x3/2x(-2/3)x
1-3(8-X)=-2(15-2X)
1-3(8-X)=-2(15-2X)
解方程 6/x^2-25=3/x^2+8x+15 + 5/x^-2x-15
15(2-x)=2x+6-5(8-3x)
先观察下列格式,(x+3)(x+5)=x^2+8x+15(x-3)(x-5)=x^2-8x+15(x+3)(x-5)=x
先观察下列格式,(x+3)(x+5)=x^2+8x+15(x-3)(x-5)=x^2-8x+15(x+3)(x-5)=x
2+3(8-x)=2(2x-15)解方程?.
15=X/3+2 .(x+2)/3=(3-x)/2.(x-3)/4-(1+3x)/8.7-(X+5)/2=(2-X)/5
7-3x-4x2+4x-8x2-15．