Resolva as equações:
A) 5(x + 2)=25
B) - 4x- 1200=0
C) 8x-2=8-2x+26
D) 4(2-x0=(39+5)+14
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Soluções para a tarefa
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a) 5(x+2) = 25 ==> 5x + 10 = 25 ==> 5x = 25 - 10 ==> 5x = 15 ==> x = 15/3
x = 5
b) - 4x - 1200 = 0 ==> -4x = 1200 ==> 4x = - 1200 ==> x = -1200/4 ==> x = -300
c) 8x -2 = 8 - 2x + 26 ==> 8x + 2x = 8 + 26 + 2 ==> 10 x = 36 => x = 36/10
x= 18/5
d) 4(2 - x) = (39 + 5) +14 ==> 8 - 4x = 44 + 14 ==> -4x = 58 - 8 - 4x = 50 ==> x = -50/4 ==> x = -25/2
x = 5
b) - 4x - 1200 = 0 ==> -4x = 1200 ==> 4x = - 1200 ==> x = -1200/4 ==> x = -300
c) 8x -2 = 8 - 2x + 26 ==> 8x + 2x = 8 + 26 + 2 ==> 10 x = 36 => x = 36/10
x= 18/5
d) 4(2 - x) = (39 + 5) +14 ==> 8 - 4x = 44 + 14 ==> -4x = 58 - 8 - 4x = 50 ==> x = -50/4 ==> x = -25/2
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