Question

resolva as equações 3(x-14)=7(x-18)​

Answer 1

Explicação passo-a-passo:

$3(x - 14) = 7(x - 18)$

$3x - 42 = 7x - 126$

$3x - 7x = - 126 + 42$

$- 4x = - 84$

$x = \frac{ - 84}{ - 4}$

$x = 21$

Answer 2

     $3(x-14)=7(x-18)$ ⇔

⇔ $3x-42=7x-126$ ⇔

⇔ $3x-7x=-126+42$ ⇔

⇔ $-4x=-84$ ⇔

⇔ $4x=84$ ⇔

⇔ $x=21$