Algebra SIMULTANEOUS EQUATIONSStep 5. Check the solution by substituting x = 6 and y = -3 into the other originalequation.3x5y33(6)5(3)31815333Thus, the solution checks.Quite often, when more than one unknown exists in a problem, the end result of the equationsexpressing the problem is a set of simultaneous equations showing the relationship of one of theunknowns to the other unknowns.Example:Solve the following simultaneous equations by substitution.3x + 4y = 6 5x + 3y = -1Solution:Solve for x:3x = 6 - 4yx = 2 - 4y3Rev. 0 Page 39 MA-02
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