Question

What is the value of a in the equation 5 a minus 10 b equals 45, when b equals 3?

Answer 1

Answer:

15

Step-by-step explanation:

5a-10b=45

5a-10.3=45

5a=75

a=15

Answer 2

Answer:

a=15

Step-by-step explanation:

$5a-10b=45$ is the given equation

The value of b is 3, replace the variable b by 3

$5a-10b=45$

$5a-10(3)=45$

$5a-30=45$

To solve for 'a' , add 30 on both sides

$5a=75$

Divide both sides by 5 to get rid of 5

a= 15

the value of a= 15