(x+7):6=7:2.1
2个回答
(x+7):6=7:2.1
2.1(x+7)=7*6
x+7=7*6÷2.1
x+7=20
x=20-7
x=13
相关问题
1/(x^2+7x)-1/(x^2+7x+6)+1/(x^2+7x+18)-1/(x^2+7x+12)=0
x-1/7x=2/3X6/7
7(6x+1)-6(7-x)=7
4.7x-1.2=1.7x+3.6
解方程(x^2+7x+6)^2+7(x^2+7x+6)+6=x
1/3-2/7x=6/7-x,x=多少?
因式分解:(1)x^2-7x+6(2)x^2-5x+6(3)x^2-5x-6(4)x^2-7x+8(5)x^2-7x+1
5/7x-1/2x=6/7解方程
解方程.X--1/5X=3/10,X/2/9=6/7,X+1/6X=7/6