Answer:
15
Step-by-step explanation:
Given: 5 a minus 10 b equals 45
To find: Value of a when b equals 3
Solution: It is given that 5 a minus 10 b equals 45. To find the value of a when b equals 3, first we need to write an equation for the given statement.
We have 5 a minus 10 b equals 45, so the equation becomes
[tex]5a-10b=45[/tex]
Now, we need to find the value of a when b equals 3. So, we need to put 3 in place of b in the equation [tex]5a-10b=45[/tex]
So, we have
[tex]5a-10(3)=45[/tex]
[tex]\implies5a-30=45[/tex]
[tex]\implies5a=45+30[/tex]
[tex]\implies5a=75[/tex]
[tex]\implies a=\frac{75}{5}[/tex]
[tex]\implies a=15[/tex]
Hence, the value of a when b equals 3 is 15.
