Question

f)9x+5=4
g)60+13x=3x
h)4x-12=x
i)5x+21=10x-19​

Answer 1

Explicação passo-a-passo:

F)

$9x + 5 = 4( = ) \: 9x = 4 - 5 \: ( = )9x = - 1 \: ( = ) x = - \frac{1}{9}$

G)

$60 + 13x = 3x( = )60 = 3x - 13x \: ( = )60 = - 10x \: ( = )x = - 6$

H)

$4x - 12 = x \: ( = ) 4x - x = 12 \: ( = )3x = 12 \: ( = ) \: x = \frac{12}{3} ( = ) \: x = 4$

I)

$5x + 21 = 10x - 19 \: ( = )5x - 10x = - 19 - 21 \: ( = ) - 5x = - 40 \: ( = ) \: x = \frac{ - 40}{ - 5} ( = ) \: x = 8$