Question

15. Solve the following equations by trial and error method.
a. 7x = 49
b. 2y - 1 = 19
C. 6Z + 5 = 29
d. a + 7 = 11​

Answer 1

a)7x = 49

x=49/7

x=7

b)2y-1=19

2y=19+1

2y=20

y=20/2

y=10

c)6Z+5=29

6Z=29-5

6Z=24

Z=24/6

Z=4

d)a+7=11

a=11-7

a=4