Question

AJUDA PORFAVOR :,(

A) 2 X + 3=5

B)3 Y - 5 =20

C)2 X . 10 = 100

D) 3 X . 2 =48

E) X : 2 = 24

F) X : 7 = 42

Answer 1

Resposta:

A) 2 X + 3=5

$2x + 3 - 5 = 0 \\ 2x - 2 = 0 \\ 2x = 2 \div (2) \\ x = 1$

B)3 Y - 5 =20

$3y - 5 = 20 \\ 3y - 5 -20 = 0 \\ 3y - 25 = 0 \\ 3y = 25 \\ \\ y = \frac{25}{3}$

C)2 X . 10 = 100

$20x = 100 \\ \\ x = \frac{100}{20} \\ \\ x = 5$

D) 3 X . 2 =48

$6x = 48 \div (6) \\ x = 8$

E) X : 2 = 24

$\frac{x}{2} = 24 \\ \\ x = 48$

F) X : 7 = 42

$\frac{x}{7} = 42 \\ \\ x = 294$