Question

1.Determine o valor de cada incógnita:

a) 5.x + 12 = 3.x - 7

b) 6.y + 3.y – 2 = 4. Y + 5

c) 3.m = 6.m -12

d) 7.m + 5 – 3.m = 4.m – 2​

Answer 1

A) 5x - 3x = -12 - 7

2x = - 19 (-1)

x= 19/2 = x= 8

B) 6y+3y - 4y = 5+2

5y = 7

y=7/5 = y=1,4

c) 3m - 6m = -12

-3m = -12 (-1)

3m=12

m=12/3 = m=4

d) 7m - 3m - 4m = -2 - 5

7m= 7

m=7/7    m=1