Answer:
A. 2(3x+15) + 2(6x+6) = 96
B. x=3
Step-by-step explanation:
A. The original equation would be (3x+15) + (6x+6) + (3x+15) + (6x+6)
Step 1: you can simplify this to 2(3x+15) + 2(6x+6) because there are two of each of each equation.
Step 2: The question says that the perimeter equals 92, and because it is an equation, you should put =92 at the end.
B. Step 1: You should solve out each question separately, so 2(3x+15) = 6x + 30. This is because 2 × 3x = 6x and 2 × 15 = 30.
2(6x+6) = 12x + 12 because 2 × 6x = 12x and 2 × 6 = 12.
Step 2: Add the two: 6x + 30 + 12x + 12
6x + 12x = 18x and 30 + 12 = 42.
Step 3: Now we have a new equation: 18x + 42 = 96
Solve this like a normal equation. (Subtract 42 from both sides to get 18x = 54. Then divide by 18 on each side. This will give you x=3)
