Question

determine a solução das equações:

a)2x+5=3/1 b)7(x+2)=2x-6

Answer 1

a) 2x + 5 = 3
2x = 3 - 5
2x = -2
x = -2/2
x = -1
S = {-1}

b) 7(x+2)=2x-6
7x +14 = 2x-6
7x -2x = -6 -14
5x = -20
x = -20/5
x = -4
S ={-4}

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29/11/2015
Sepauto - SSRC
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