求未知数x 4(x+2)-6=10 2x-1.7+2.3=7.4 4.5:2=x:44
问题描述:
求未知数x 4(x+2)-6=10 2x-1.7+2.3=7.4 4.5:2=x:44
答
4(x+2)-6=10 4x+8-6=10 4x=8 x=2
2x-1.7+2.3=7.4 2x=6.8 x=3.4
4.5:2=x:44 2x=44*4.5 x=99