Answer :
If the equation is 4=9q+7 then the value of q is -1/3.
Given an equation being 4=9q+7.
We are required to find the value of variable q present in the equation.
Equation is basically a relationship between two or more variables that are expressed in equal to form. It may be linear equation, quadratic equation, cubic equation but depending on the powers of variables present in the equation. Equation of two variables look like ax+by=c.
Our equation is 4=9q+7.
To find the value of q we need to first take 7 to other side and it will become negative 7 when goes in the left hand side.
4-7=9q
-3=9q
Now take 9 to left hand side.
q=-3/9
Now we have to divide 3 by 9.
q=-1/3
Hence if the equation is 4=9q+7 then the value of q is -1/3.
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