Advanced Mathematics Primary 6 Algebra

Find the value of 3a + 2b when a = 4 and b = 5.

A 22
B 26
C 14
D 17
Show Worked Solution

Worked Solution

Step 1: Substitute a = 4 and b = 5 into 3a + 2b. Step 2: Evaluate 3a: 3 × 4 = 12. Step 3: Evaluate 2b: 2 × 5 = 10. Step 4: Add: 12 + 10 = 22. Answer: 22.

Correct answer: 22

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