Question

resolva a equação a seguir a)×+2=11 b)×-5=10 c)4×=20 d)5×=2×+6 e)2×=-8

Answer 1

a) x + 2 = 11
x = 11-2
x = 9

b) x - 5 = 10
x = 10 + 5
x = 15

c) 4x = 20
x = 20/4 (Dividido por 4)
x = 5

d) 5x = 2x + 6
5x - 2x = 6
3x = 6
x = 6/3
x = 2

e) 2x = - 8
x = -8/2
x = -4

Answer 2

Olá, boa noite!

Resposta:

A) x = 9

B) x = 15

C) x = 5

D) x = 2

E) x = -4

Explicação passo-a-passo:

A) x + 2 = 11

$\mathsf{x +2=11}$

$\mathsf{x=11-2}$

$\boxed{\mathsf{x=9}}$

________

B) x - 5 = 10

$\mathsf{x -5=10}$

$\mathsf{x=10+5}$

$\boxed{\mathsf{x=15}}$

_________

C) 4x = 20

$\mathsf{4x=20}$

$\mathsf{x = \dfrac{20}{4}}$

$\boxed{\mathsf{x=5}}$

_________

D) 5x = 2x + 6

$\mathsf{5x=2x+6}$

$\mathsf{5x-2x=6}$

$\mathsf{3x=6}$

$\mathsf{x=\dfrac{6}{3}}$

$\boxed{\mathsf{x=2}}$

__________

E) 2x = - 8

$\mathsf{2x=-8}$

$\mathsf{x=\dfrac{-8}{2}}$

$\mathsf{x=-\dfrac{8}{2}}$

$\boxed{\mathsf{x=-4}}$

================= Espero ter ajudado =================

Abraços!