Question

Resolva as equações abaixo: Ajude aí pfv... Vlw.

a) 10x + 16 = 14 + 8

b) 2. (x - 3) = -3 (x -3)

c) 5. (x + 1) + 6 (x + 3) = 9 ( x +3)

Answer 1

10x + 16 = 14 + 8
10x + 16 = 22
10x = 22 - 6
10x = 16
x = 16/10
x = 8/5
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2(x - 3) = - 3(x - 3)
2x - 6 = -3x + 9
2x + 3x = 9 + 6
5x = 15
x = 15/5
x = 3 
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5(x + 1) + 6(x + 3) = 9(x + 3) 
5x + 5 + 6x + 18 = 9x + 27
11x + 23 = 9x + 27
11x - 9x = 27 - 23
2x = 4
x = 4/3
x = 2