Question

Resolva as equações: A) X-2=10

B)-3X=6


C)3Y+1=10





D) 5X-4=8+2X​

Answer 1

a)

$x - 2 = 10 \\ x = 10 + 2 \\ = 12$

b)

$- 3x = 6 \\ - 3x \div ( - 3) = 6 \div ( - 3) \\ x = - 2$

c)

$3y + 1 = 10 \\ 3y = 10 - 1 \\ 3y = 9 \\ y = 3$

d)

$5x - 2x = 8 + 4 \\ 3x = 12 \\ x = 4$

Answer 2

Resposta:

A) X=10+2

X=12

B)X= 6÷(-3)

X=(-2)

C)3Y=10-1

3Y=9

Y=9÷3

Y=3

D)5X-2X=8+4

3X=12

X=12÷3

X=4