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You subtract 5 from the left-hand side of an equation. What must you also do?
AAdd 5 on the right as well
BSubtract 5 on the right too
CDivide the right side by 5
DLeave the right side alone
Answer & Solution
Correct answer: B. Subtract 5 on the right too
1. An equation states that the two sides are equal in value.
2. An equation must always stay balanced, so whatever you do to the left-hand side you must also do to the right-hand side.
3. Subtracting 5 from only one side would break that equality.
4. Always check the answer at the end by substituting it back into the original equation.
_Source: Siyavula Mathematics Grade 10 (Everything Maths, CC BY 4.0), Chapter 4: Equations and inequalities_
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