a) 2(x-2)+5(2-x)+6(x+1)=0
b)2[x-2(x+2)]-3=x+3(x+1)
Ola maria
a)
2*(x - 2) + 5*(2 - x) + 6*(x + 1) = 0
2x - 4 + 10 - 5x + 6x + 6 = 0
3x = -12
x = -4
b)
2*(x - 2*(x + 2)) - 3 = x + 3*(x + 1)
2*(x - 2x - 4) - 3 = x + 3x + 3
2x - 4x - 8 - 3 = 4x + 3
2x - 4x - 4x = 3 + 11
-6x = 14
x = -7/3
pronto
obrigado
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Answers & Comments
Ola maria
a)
2*(x - 2) + 5*(2 - x) + 6*(x + 1) = 0
2x - 4 + 10 - 5x + 6x + 6 = 0
3x = -12
x = -4
b)
2*(x - 2*(x + 2)) - 3 = x + 3*(x + 1)
2*(x - 2x - 4) - 3 = x + 3x + 3
2x - 4x - 8 - 3 = 4x + 3
2x - 4x - 4x = 3 + 11
-6x = 14
x = -7/3
pronto
obrigado