Answer:
See explanation.
Step-by-step explanation:
I'm assuming your question is to simplify the given expression. I will work that problem and also I will solve for x just in case that's your question instead.
Step 1: Simplify inside parenthesis
7x + 3 - x = 6x + 3
Step 2: Multiply simplified expression by number outside parenthesis
2 * (6x+3) = 2*6x + 2*3
12x + 6
Simplification is done after this step.
Step 3 (unnecessary if the problem is to simplify the expression): Solve
12x + 6 = 0
12x = -6
x = -1/2
Since there was no term given on the other side of the equal sign, I assumed that term was zero.
