Question

sendo X a variavel resolva as seguintes equaçoes literais:

a) 8x - a . (x + 3) = 1

b) 14t + 9x - 3t = 2tx + 36

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

Answer 1

a) 8x - a . (x + 3) = 1 ==. 8x - ax - 3a = 1 ==> x(8-a)= 1+3a => x= 1+3a
                                                                                                         8-a
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b) 14t + 9x - 3t = 2tx + 36 => 11t + 9x - 2tx = 36 ==> x(9 -2t) = 36 - 11t

x = 36 - 11t
       9  - 2t
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c) b.(x - 2) = 2.(3 - x) + b ==> bx - 2b = 6 - 2x ==> bx + 2x = 6 + 2b

x( b + 2) = 6 +2b ==. x = 6 +2b
                                        b + 2