Question

resuelve las siguientes ecuaciones
2. 5 x + 25 = 45
3. 20 + 6x = 35 + 9
4. 5x + 12 – 2x = 28
5. 2 x – 5 – 3x + 1 – 3 = 0
6. 12 + 2x = 12 + 4
7. 15 a – a + 2 = 10

Answer 1

Respuesta:

5x+25=45

5x=45-25

5x=20

X= 4

20+6x=35+9

6x=35+9-20

6x =24

X=4

5x+12-2x=28

5x-2x=28-12

3x=16

X=16/3

2x-5-3x+1-3=0

2x-3x=5+3-1

-1x = 7

X=-7

12+2x=12+4

2x=12+4-12

2x=4

X=2

15a-a+2=10

15a-a=10-2

14a=8

A=8/14