Question

b) 5.x - 13 = 7.x - 19 *

x = - 3

x = 3

x = - 16

n.d.a

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Answer 1

Resposta:

5•x-13=7•x-19

5x-13=7x-19

5x-7x=-19+13

2x= -6

x = - 6

2

x= -3