Question

Determine o valor de a e de b nos pares ordenados:

(a - 3, b + 5) = ( 2a + 4, 3b - 8)​

Answer 1

Resposta:

a) (3, 7) = (a, 7) ==> a = 3

b) (a, b) = (0, -1) ==> a = 0   ; b = - 1

c) (a, 2) = (-3, b) ==> a = - 3   ; b = 2

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d) (a+3, 8) = (5, b)

a + 3 = 5 ==. a = 5 - 3==. a = 2

b = 8

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e) (3a-1, b+4) = (8, 2)

3a - 1 = 8 ==. 3a = 8+1 ==. 3a = 9 ==. a = 3

b + 4 =  2 ==> b = 2 - 4 ==> b = - 2