Question

Como resolver las siguientes ecuaciones : 3X+X+8=20 ; 4x+4=14-X

Answer 1

3x + x + 8 = 20

4x + 8 = 20

4x = 20 - 8

4x = 12

x = 12/4

x = 3
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4x + 4 = 14 - x

4x + x = 14 - 4

5x = 10

x = 10/5

x = 2