Question

CALCULA EL VALOR DE LA INCÓGNITA EN CADA CASO: a. 5x – 3 = 9 b. –3 + 2x = 5 + 10x c. 4 – x/2 = 18 d. –x + 11 = –2x + 6 f. x/2 = 1 – 3x/4 e. 3(x – 6) = 2(9 – 3x)

Answer 1

Respuesta:

a) x = 12/5

b) x = -1

c) x = -28

d) x = -5

e) x = 4

f) x = 4/5

Explicación paso a paso:

a). 5x – 3 = 9

5x = 9 + 3

5x = 12

x = 12/5

b). – 3 + 2x = 5 + 10x

2x - 10x = 5 + 3

- 8x = 8

8x = -8

x = -8/8

x = -1

c). 4 – x/2 = 18

4 - 18 = x/2

-14 = x/2

(-14)*2 = x

x = -28

d). – x + 11 = – 2x + 6

-x + 2x = 6 - 11

x = -5

e). 3(x – 6) = 2(9 – 3x)

3x - 18 = 18 - 6x

3x + 6x = 18 + 18

9x = 36

x = 36/9

x = 4

f). x/2 = 1 – 3x/4

x/2 + 3x/4 = 1

(2x + 3x)/4 = 1

5x/4 = 1

5x = 4

x = 4/5