2.1x+3.5y=10.5
3.5y = 10.5 - 2.1 = 8.4
y = 8.4/3.5 = ?
The answer is that y equals 3
The equation you provided is a linear equation with two variables, x and y. It can be written in the standard form of a linear equation, which is Ax + By = C.
To solve for either variable, we need a second equation involving x and y. Without a second equation, we cannot find a unique solution for the values of x and y.
If you have another equation involving x and y, please provide it, and I can help you solve the system of equations using different methods such as substitution, elimination, or graphing.