Question

trial and error method:
(a)3x+1=10​

Answer 1

Answer:

3

Step-by-step explanation:

3x = 10 - 1

3x = 9

X = 9/3

x = 3

Answer 2

Answer:

taking x equal 1

4=/= 10

taking x equal 2

7=/= 10

when x equal 3

10=10

so x=3