Substitution and Formulas Worksheet
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Substitution and Formulas Worksheet
📚 Understanding Substitution and Formulas
What is substitution? Substitution means replacing letters (variables) in a formula with numbers.
Example 1: If y = 3x + 5 and x = 4
Substitute x = 4: y = 3(4) + 5 = 12 + 5 = 17
Example 2: Area of rectangle: A = l × w
If length = 8m and width = 5m: A = 8 × 5 = 40m²
Example 3: Converting temperature: F = (9 × C) ÷ 5 + 32
If C = 20°C: F = (9 × 20) ÷ 5 + 32 = 180 ÷ 5 + 32 = 36 + 32 = 68°F
✏️ Substitution Practice
🎯 Real-World Applications
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