Question

Can anyone pls help. I don't know trial and error method.​

Answer 1

Answer:

1. 3a + 4 = 13

If a = 1 ,(3*1) = not 13

If a = 2, (3*2) = not 13

If a = 3 , (3*3) = 13

9 + 4 = 13

Therefore, a = 3 is the solution of 3a + 4 =13

2. 5m + 14 = 4

If m = 1, (5*1) = not 4

If m = 2, (5*2) = 4

10 - 14 = 4

Therefore, m = 2 is the solution of 5m + 14 =4

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Answer 2

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