Question

1) Which expression is equivalent to

6(x + 7) + 3x?
A) 9x + 7
B 9x + 13
9x + 42
45x

Answer 1

c

Explanation:

6x+42+3x

6x+3x +42

9x+ 42

Answer 2

Explanation:

Given expression,

`\\ {\longrightarrow \qquad{ \sf{6(x + 7) + 3x}}}\\ \\`

Using distributive property we get,

`\\ {\longrightarrow \qquad{ \sf{6x + 42 + 3x}}}\\ \\`

Adding like terms (6x and 3x) we get,

`\\ {\longrightarrow \qquad{ \sf{9x + 42 }}}\\ \\`

So, From the given options, Option C is equivalent to 6(x + 7) + 3x .