Question

Rezolvati in Z ecuatiile​

Answer 1

2x+5=x+6

2x-x=6-5

x=1

2x+12=x-6

2x-x=-6-12

x=-18

3x-1=x+9

3x-x=9+1

2x=10

x=5

4x+9=3x+17

4x-3x=17-9

x=8

2x-5=-x+7

2x+x=7+5

3x=12

x=4

4x-12=x+6

4x-x=6+12

3x=18

x=6

2x+9=7+x

2x-x=7-9

x=-2

4-3x=x+12

4-12=x+3x

-8=4x

x=-2

-x+7=x+21

7-21=x+x

-14=2x

x=-7

3-2x=-x+6

3-6=-x+2x

-3=x

6+3x=-54+x

6+54=x- 3x

60=-2x

2x=-60

x=-30

1+9x=-89-x

1+89=-x-9x

90=-10x

-90=10x

x=-9