Steps to Solve: 1. Look at the operation (- or +) to find out what it's oppostie operation would be 2. Divide the problem into 2 parts: left and right 3. Now add/subtract the number to each side. 4. The positive and negative numbers on the left side cancel each other out. 5. Bring down the variable and the equal sign. 6. Solve the equation on the right side and the answer to that solves your addition/subtraction algebraic equation. Steps to Check: 1. Rewrite the problem. 2. Replace the variable with the answer. (The answer should be in perentheses.) 3. Check to see if both answers are correct. 4. If both answers are the same, you are correct. 5. If not you need to redo the algebraic equation Steps to Solve.
Steps to Solve:
1. Look at the operation (- or +) to find out what it's oppostie operation would be
2. Divide the problem into 2 parts: left and right
3. Now add/subtract the number to each side.
4. The positive and negative numbers on the left side cancel each other out.
5. Bring down the variable and the equal sign.
6. Solve the equation on the right side and the answer to that solves your addition/subtraction algebraic equation.
Steps to Check:
1. Rewrite the problem.
2. Replace the variable with the answer. (The answer should be in perentheses.)
3. Check to see if both answers are correct.
4. If both answers are the same, you are correct.
5. If not you need to redo the algebraic equation Steps to Solve.
Example:
15+ N |=34
-15 | -15
(cancel out)N
34-15=19
5+x=5
x=0
Easy Problems:
3 + x = 7
Answer: x = 4
50 - x = 25
Answer: x = 25
90+X=1000 Answer X = 910
Medium Problem:
x - 6 = 72
Answer: x = 78
82-x=41
x=41
Hard Problems:
12 + x + 6 = 43
Answer: x = 35
22+x-20=5
x=3
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