Question

m 7x + 3(x - 1)

Explanation:

Step1: Apply the distributive property

To simplify \( 7x + 3(x - 1) \), we first use the distributive property \( a(b - c)=ab - ac \). Here, \( a = 3 \), \( b=x \), and \( c = 1 \), so \( 3(x - 1)=3x-3 \).
The expression becomes \( 7x+3x - 3 \).

Step2: Combine like terms

Now, we combine the like terms \( 7x \) and \( 3x \). Since \( 7x+3x=(7 + 3)x=10x \), the simplified expression is \( 10x-3 \).

Answer:

\( 10x - 3 \)