Question

Resolva as equações sendo U = Q

B) X - 7 = 9

C) 6+ X = 2

D) X + 9 = 1

E) 5 = X + 3

F) X/3 = -1

G) 7X - 1 = 13

H) 6X = 2X + 28

I) 3 (X + 2) = 15

J) 3X/4 = 2 + 2X/3​

Answer 1

Resposta:

B) x = 16

C) x = -4

D) x = -8

E) x = 2

F) x = -3

G) x = 2

H) x = 7

I) x = 3

J) x = 24

Explicação passo a passo:

B) x = 9+7

x = 16

=============================

C) x = 2-6

x = -4

=============================

D) x = 1-9

x = -8

=============================

E) 5 -3 = x

2 = x     ou    x = 2

============================

F) x = 3.(-1)

x = -3

=============================

G) 7x = 13 +1

7x = 14

x = $\frac{14}{7}$

x = 2

=============================

H) 6x - 2x = 28

4x = 28

x = $\frac{28}{4}$

x = 7

=============================

I) 3x + 3.2 = 15

3x + 6 = 15

3x = 15 - 6

3x = 9

x = $\frac{9}{3}$

x = 3

=============================

J) $\frac{3x}{4} = 2 + \frac{2x}{3}$

$\frac{3x}{4} - \frac{2x}{3} = 2$        MMC(3,4) =12

$\frac{9x-8x}{12} = 2$

9x - 8x = 12.2

x = 24