Question

rezolvati in z ecuatiile
x+7=-10
2×-8=-20
-15x-13=-7×+11
|x+3|=4
-13-x+5=-143
5(x+3)=2(5x-5)​

Answer 1

1. x+7=-10

x=-10-7

x=-17

2. 2x-8=-20

2x=-20+8

2x=-12

x=-6

3. -15x-13=-7x+11

-15x+7x=11+13

-8x=24

x=-3

4. |x+3|=4

x+3=4 x+3=-4

x=1 x=-7

5. -13-x+5=-143

18-x=-143

-x=-143-18

-x=-161

x=161

6. 5(x+3)=2(5x-5)

5x+15=10x-10

5x-10x=-10-15

-5x=-25

x=5