Question

Resolva a equações: A)5(X+1)+6(X+2)=9(X+3) B) 30-20+2X=10

Answer 1

a) 5(x+1) + 6(x+2) = 9(x+3)
    5x+5  + 6x+12 = 9x +27
    11x + 17 = 9x +27 
    11x - 9x = 27 - 17
    2x = 10 
    x =$\frac{10}{2}$
    x= 5

b) 30 - 20 + 2x = 10
     10 + 2x = 10 
      2x = 10 -10
      2x = 0
      x = 0

Answer 2

A)
5(X + 1) + 6(X + 2) = 9(X + 3)
5x + 5 + 6x + 12 = 9x + 27
11x + 17 = 9x + 27
11x - 9x = 27 - 17
2x = 10
x = 10/2
x = 5

B)
30 - 20 + 2X = 10
10 + 2x = 10
2x = 10 - 10
2x = 0
x = 0/2
x = 0