Question

resolva as equaçoes considerando u = q

a) 5x + 3x - 10 = 4x -2x +3

b)4 . (y+2) = 12

c) 3 . (m + 1) = 2 . (-m -1)

Answer 1

Resposta:

5x + 3x - 10 = 4x -2x +3

8x - 10 = 2x + 3

8x - 10 - 2x = 3

6x = 3 + 10

6x = 13

x = $\frac{13}{6}$

b)4 . (y+2) = 12

4y + 8 = 12

4y = 12 - 8

4y = 4

y = $\frac{4}{4}$

y = 1

c) 3 . (m + 1) = 2 . (-m -1)

3m + 3 = - 2m - 2

3m + 3 + 2m = -2

5m = -2 - 3

5m = -5

m = - 5/5

m = -1