Question

Solve 5x + 1 = 16 by trial-and-error method plz answer

Answer 1

Answer:

3

Step-by-step explanation:

5x + 1 = 16

By trial and error method : -

When x = 1,

5 ( 1 ) + 1 = 16

6 + 1 = 16

7 ≠ 16

Therefore,

x ≠ 1

When x = 2,

5 ( 2 ) + 1 = 16

10 + 1 = 16

11 ≠ 16

Therefore,

x ≠ 2

When x = 3,

5 ( 3 ) + 1 = 16

15 + 1 = 16

16 = 16

Therefore,

x = 3