Question

Solve the following equation by trial- and- error method
1) x + 3 = 12
2) 4x = 28​

Answer 1

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Answer 2

Answer:

a) x=9         b) x=7

Step-by-step explanation:

x+3=12               4x=28

x=12-3                x=28/4

x=9                      x=7