Question

Rezolva in R ecuatiile :

a) 4x+4=2x+24
b) 5x-4=3x+24
c) 7x+5= 2x+25
d) 9x-6=6x+30

Answer 1

a)4x+4=2x+24

4x-2x=24-4

2x=20

x=10

b)5x-4=3x+24

5x-3x=24+4

2x=28

x=14

c)7x+5=2x+25

7x-2x=25-5

5x=20

x=4

d)9x-6=6x+30

9x-6x=30+6

3x=36

x=12