Question

Rozwiąż równania

3(x+1)=2x+(x+3)
2(x+4)-6=3(x-2)+7x
5(x-2)=7(1-x)+2(x-1)
3(x+1)+6x=-2(x-1)+8

Answer 1

3(x+1)=2x+(x+3)

3x+3=2x+x+3

3x+3=3x+3

0=0

2(x+4)-6=3(x-2)+7x

2x+8-6=3x-6+7x

2x+2=10x-6

2x-10x=-6-2

-8x=-8               /:(-8)

x=1

5(x-2)=7(1-x)+2(x-1)

5x-10=7-7x+2x-2

5x-10=-5x+5

10x=15                   /:10

x=15/10=3/2

3(x+1)+6x=-2(x-1)+8

3x+3+6x=-2x+2+8

9x+3=-2x+10

11x=7                /:11

x=7/11