From the course: Learning Algebra: Solving Equations

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Solution: Solve subtraction equations

Solution: Solve subtraction equations

From the course: Learning Algebra: Solving Equations

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Solution: Solve subtraction equations

- These are the answers to worksheet number two. Please check your answers and if any of your answers don't match mine, continue watching this video and I'll walk you step-by-step through every single problem. Challenge problem letter A is x minus 130 equals negative 220. For this problem, since we're subtracting, we're going to add 130 to both sides. So I'm going to begin by writing x minus 130 and then I'm going to add 130, so that I can isolate my variable and get x by itself. On the right hand side you have negative 220 and I need to remember to add 130 to keep my equation balanced. On the left hand side we have negative 130 plus 130, which is equal to zero, so I'm left with just x. On the right hand side, we now have negative 220 plus 130, which is equal to negative 90. So the final answer is x equals negative 90. Letter B is 67 equals y minus 97. This equation is written backwards. You may have decided to go ahead and continue solving with the variable on the right hand side, or…

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