Class 9 maths · A.4 · Linear Equations
Solve one-step equations with adding and subtracting
Do the opposite operation to both sides.
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Solve for x: 9 + x = 3
Answer: -6
Solve for x: x − 9 = −5
Answer: 4
Solve for x: x − 12 = −6
Answer: 6
Tip: Do the opposite operation to both sides.
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