Question

Resolver as seguintes equações (na incógnita x): a)2x+ 3x = 75 b)18x - 43 = 65 c) 23x - 16 = 14 - 17x

Answer 1

Explicação passo-a-passo:

a) $\sf 2x+3x=75$

$\sf 5x=75$

$\sf x=\dfrac{75}{5}$

$\sf x=15$

b) $\sf 18x-43=65$

$\sf 18x=65+43$

$\sf 18x=108$

$\sf x=\dfrac{108}{18}$

$\sf x=6$

c) $\sf 23x-16=14-17x$

$\sf 23x+17x=14+16$

$\sf 40x=30$

$\sf x=\dfrac{30}{40}$

$\sf x=\dfrac{3}{4}$

Answer 2

Oie, Td Bom?!

a)

2x + 3x = 75

5x = 75

x = 75/5

x = 15

b)

18x - 43 = 65

18x = 65 + 43

18x = 108

x = 108/18

x = 6

c)

23x - 16 = 14 - 17x

23x + 17x = 14 + 16

40x = 30

x = 30/40

x = 30÷10/40÷10

x = 3/4

Att. Makaveli1996