Question

Qual é a resposta dessas equações, urgenteeeeee!!

A) 4x-20=4+2x

B) 25x+8=20x+7

C) 4x+2x+20=60+x+3x

D) 90+4+30x=50x+84

Answer 1

4x - 20 = 4 + 2x
4x - 2x = 4 + 20
2x = 24
x = 12



25x + 8 = 20x + 7
25x - 20x = 7 - 8
5x = -1
x = ⁻¹/₅



4x + 2x + 20 = 60 + x + 3x
6x - 4x = 60 - 20
2x = 40
x = 20



90 + 4 + 30x = 50x + 84
94 + 30x = 50x + 84
-20x = -10
x = ¹/₂

Answer 2

Vamos Lá, Fernando12C

A) $4x-20=4+2x$
    $4x-2x = 20 +4$
         $2x = 24$
        $x = 24/2$
   
 $\boxed{x = 12}$


B)$25x+8=20x+7$
$25x - 20x = 7-8$
$5x = -1$

$\boxed{x = -1/5}$



C)$4x+2x+20=60+x+3x$
$6x +20 = 60 +4x$
$6x-4x = 60-20$
$2x = 40$
$x = 40/2$

$\boxed{x = 20}$



D)$90+4+30x=50x+84$
   $94 + 30x -50x = 84$
$-20x = 84 -94$
$-20x = -10$
$-20x = -10 *(-1)$
$20x = 10$
$x = 10/20$ simplificando por 10

$\boxed{x = 1/2}$

Espero Ter Ajudado!!!
Bons Estudos!!!

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