Check the solution by substituting x = 6 and y = -3 into the other original
Thus, the solution checks.
Quite often, when more than one unknown exists in a problem, the end result of the equations
expressing the problem is a set of simultaneous equations showing the relationship of one of the
unknowns to the other unknowns.
Solve the following simultaneous equations by substitution.
3x + 4y = 6
5x + 3y = -1
Solve for x:
3x = 6 - 4y
x = 2 - 4y