Answer:
C. x = 5
Explanation:
Step 1 - Simplify the equation by adding the common terms
3x - 7 + 4x = 28
3x + 4x - 7 = 28
7x - 7 = 28
Step 2 - Add seven to both sides of the equation
7x - 7 = 28
7x - 7 + 7 = 28 + 7
7x = 35
Step 3 - Divide both sides of the equation by seven
7x = 35
7x/ 7 = 35/ 7
x = 5
Therefore, the correct answer should be ‘c. x = 5.’
