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12-10.

Use the algebraic strategies you have developed to solve the system of equations below. Be sure to check your solution. Homework Help ✎



Choose a pair of equations that can be added together to eliminate a variable.

Choose a different pair of equations to add together to eliminate the same variable.
In this case, you will have to multiply each equation by a constant.

Solve the system of equations you created in steps 1 and 2 for either or .

Solve for using the two-variable equation you created in either step 1 or step 2.
Then substitute the values for and into one of the original equations to solve for .

Check your solution in a different equation than the one you used to solve for .