Question

Solve the following equations by the trial and error method. a) 2x+ 10 = 18 b) 3(x−1) = 6 c) 5x= 15

Answer 1

Answer:

a) 2x+10=18

2x+10-10=18-10

2x=8

2x/2=8/2

x=4

b)3(x-1)=6

3x-3=6

3x-3+3=6+3

3x=9

3x/3=9/3

x=3

c)5x=15

5x/5=15/5

x=3