Question

Solve the following :

i. x + 3 = 11

ii. y – 9 = 21

iii. 10 = z + 3

iv. \(\frac{3}{11} + x = \frac{9}{11}\)

v. 10x = 30

Answer 1

i. x + 3 = 11

x + 3 = 11 

x = 11 – 3 

x = 8

ii. y – 9 = 21

y – 9 = 21 

y = 21 + 9 

y = 30

iii. 10 = z + 3

10 = z + 3 10-3 =z 

7 = z 

or z = 7

iv. \(\frac{3}{11} + x = \frac{9}{11}\)

v. 10x = 30

10x = 30 

x = \(\frac{30}{10}\)

x = 3