Question

Resolver las siguientes ecuaciones:
1) X + 5 = 13
2) 2x = x + 15
3) 3x + 3 = 2x + 9
4)
5x = 60
5) 3x – 5 = x + 7

aiuda ​

Answer 1

1) X + 5 = 13 verificó: 8 + 5 = 13

X = 13 - 5 13 = 13

X = 8

2) 2x = x + 15 verificó: 2.15= 15+15

2x-x = 15 30 = 30

x = 15

3)3x+3= 2x+9 verificó: 3.6+3=2.6+9

3x - 2x = 9-3 18 + 3= 12+ 9

x = 6 21 = 21

4) 5x = 60 verificó: 5.12 = 60

x = 60 : 5 60 = 60

x = 12

5) 3x–5=x+7 verificó: 3.6-5=6+ 7

3x - x = 7 + 5 18 - 5 = 13

2x = 12 : 2 13 = 13

x = 6