Question

question #7
choose the expression that is equivalent to this expression: 3(10+9)
a 30 + 34
b 30 + 27
c 42 + 12
d 42 + 36

Explanation:

Step1: Apply distributive property

The expression is \( 3(10 + 9) \). By the distributive property \( a(b + c)=ab+ac \), we have \( 3\times10+3\times9 \).

Step2: Calculate each term

Calculate \( 3\times10 = 30 \) and \( 3\times9 = 27 \). So the equivalent expression is \( 30 + 27 \).

Answer:

B. \( 30 + 27 \)