Question

resolva as equações a seguir .
a) 4x + 11 - 7x = -11
b) 5x - (-x + 22) = -4
c) 11x - (-3x + 10) = 4x + 2

Answer 1

a) 4x+11-7x = -11
4x-7x = -11 -11
-3x = -22
3x = 22
x = 22/3 ou 7,333...

b) 5x-(-x+22) = -4
5x+x-22 = -4
6x = -4 +22
6x = 18
x = 18/6
x = 3

c) 11x-(-3x+10) = 4x +2 
11x+3x-10 = 4x+2
14x-4x = 2+10
10x = 12
x = 12/10
x = 6/5 ou 1,2