6(x+1)=4(x+4) 6(x-1)=4(3-2x) 5-3x=8-4x 5-(x+3)=4-3x 1/2(x+6)=2(x-1) 5(2x-3)-15=7x-5
问题描述:
6(x+1)=4(x+4) 6(x-1)=4(3-2x) 5-3x=8-4x 5-(x+3)=4-3x 1/2(x+6)=2(x-1) 5(2x-3)-15=7x-5
解方程
答
6(x+1)=4(x+4)6X+6=4X+162X=10X=56(x-1)=4(3-2x) 6X-6=12-8X14X=18X=9/75-3x=8-4xX=35-(x+3)=4-3x 2-X=4-3X2X=2X=11/2(x+6)=2(x-1) X+6=4X-43X=10X=10/35(2x-3)-15=7x-510X-15-15=7X-53X=25X=25/35-3x=8-4x这道题把步骤写下来5-3x=8-4x移项 -3X+4X=8-5合并同类项X=3