Step-by-step explanation:
5x 3 1/2 = 3 x 5 1/2 is false
Answer:
1)Add 19
2)Multiply by 5
Step-by-step explanation:

Adding 19 to both sides.

Multiplying 5 to both sides.

∴
Answer:
75 ft^2
Step-by-step explanation:
I assume you mean a 5 ft x 15 ft rectangle. That's 5*15
No Solution
No Solution
All real numbers
Any number in place of x makes the equation true

To solve this one-step equation you:
1. Substract 9 in both sides of the equation:
In this step is the mistake as Sara gets as result -4x=29 and the corret result of substract 9 in both sides of the equation is 5x=20.
2. Divide both sides of the equation into 5:
Then, the answer that Sara should found for the equation is x=4