Question

谁来帮我解几道方程,重谢啊,会的快来

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