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

2 Answers
Mar 2, 2018

a=15

Explanation:

5a – 10b = 45

When b=3, [By transposing method]

5a–(10xx3) = 45

5a- 30=45

5a = 45+30

5a = 75

a=75/5

a=15

~Hope this helps! :)

Mar 2, 2018

a=15

Explanation:

Just put 10 instead of b in the equation to get:

5a-(10.3)=45

5a-30=45

Then add 30 to both sides

5a=75

Then divide both sides by 5

a=15