Question

Resolver cada una de las siguientes ecuaciones:
a. 3x - 5 = 13
b. 2A-%2 = 3
C. 4p + 5/4 = 2/3
d59-6 = 77 + 8
e. 2.(3c - 4) = 50 - 7
f. 2/3.y +4/5 = 5/2.y +7/6​

Answer 1

Respuesta:

a) x = 6

b) a = 7/4

c) p = - 7/48

d) Q = -7

e) c = 17/2

f) y = -1/5

Explicación paso a paso:

a)

3x - 5 = 13

3x = 13 + 5

3x = 18

x = 18/3

x = 6

b)

2a - 1/2 = 3

2a = 3 + 1/2

2a = 6/2 + 1/2

2a = 7/2

a = 7/(2.2)

a = 7/4

c)

4p + 5/4 = 2/3

4p = 2/3 - 5/4

4p = 8/12 - 15/12

4p = - 7/12

p = - 7/ (12.4)

p = - 7/48

d)

5Q - 6 = 7Q + 8

7Q - 5Q = - 6 - 8

2Q = - 14

Q = -14 /2

Q = -7

e)

2(3c - 4) = 50 - 7

6c - 8 = 43

6c = 43 + 8

6c = 51

c = 51/6

c = 17/2

f)

2y/3 + 4/5 = 5y/2 + 7/6

5y/2 - 2y/3 = 4/5 - 7/6

15y/6 - 4y/6 = 24/30 - 35/30

11y/6 = -11/30

y= (-11 . 6) / (30 . 11)

y= - 6 / 30

y = -1/5