Question

7.2(x-3)=1.2(x+8)怎么解

谁来帮我解几道方程,重谢啊,会的快来
(1)5(x-1)=1
(2)2-(1-x)=-2
(3)11x+1=5(2x+1)
(4)4x-3(20-x)=3
(5)5(x+8)-5=0
(6)2(3-x)=9
(7)-3(x+3)=24
(8)-2(x-2)=12
先来先解题先得分啊.最好是竖着写,正确的我会追分哦.快来把

Answer 1

(1)5(x-1)=1
5x-5=1
5x=1+5=6
x=6÷5
x=6/5
(2)2-(1-x)=-2
2-1+x=-2
x=-2-2+1
x=-3
(3)11x+1=5(2x+1)
11x+1=10x+5
11x-10x=5-1
x=4
(4)4x-3(20-x)=3
4x-60+3x=3
4x+3x=3+60
7x=63
x=63÷7
x=9
(5)5(x+8)-5=0
5x+40-5=0
5x=5-40=-35
x=-35÷5
x=-7
(6)2(3-x)=9
3-x=9÷2=9/2
x=3-9/2
x=-3/2
(7)-3(x+3)=24
x+3=24÷(-3)=-8
x=-8-3
x=-11
(8)-2(x-2)=12
x-2=12÷(-2)=-6
x=-6+2
x=-4