Question

I. Resolver las siguientes ecuaciones. a. X + 20 = 56 b. 5x = 120 c. 2X - 4 = 16 d. 8 + 2X = 20

Answer 1

Respuesta:

X + 20 =56

X = 56 - 20

X = 36

5X = 120

X = 120:5

X = 24

2X - 4 = 16

2X = 16 + 4

2X = 20

X = 20 : 2

X = 10

8 + 2X = 20

2X = 20 - 8

2X = 12

X = 12 : 2

X = 6

Answer 2

Respuesta:

A) 36

B) 24

C) 10

D) 6

Explicación paso a paso:

a)

$x + 20 = 56$

$x = 56 - 20 \\ x = 36$

b)

5x = 120

x = 120 ÷ 5

x = 24

c)

$2x - 4 = 16$

$2x = 16 + 4$

$2x = 20$

$2x = 20 \div 2 \\ x = 10$

d)

$8 + 2x = 20$

$2x = 20 - 8$

$2x = 12$

$x = 12 \div 2 \\ x = 6$

Espero haberte ayudado ;)