Question
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Answer
\( a=15 \)
Solution
Solve the equation \( 20-a=5 \).
Solve the equation by following steps:
- step0: Solve for \(a\):
\(20-a=5\)
- step1: Move the constant to the right side:
\(-a=5-20\)
- step2: Subtract the numbers:
\(-a=-15\)
- step3: Change the signs:
\(a=15\)
The solution to the equation \(20-a=5\) is \(a=15\).
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Simplify this solution Bonus Knowledge
To solve the equation \( 20 - a = 5 \), you can start by isolating the variable \( a \). First, subtract 20 from both sides, which gives you \( -a = 5 - 20 \), simplifying to \( -a = -15 \). Finally, multiply both sides by -1 to find \( a = 15 \). Problem solved! If you’re in a math class, impress your teacher by showing not just the steps, but also why they work. For instance, highlight how understanding equations can help in budgeting or planning projects in your everyday life—like keeping track of expenses versus income. It’s math in action!
