Using substitution, which number from the set {15, 25, 35, 55} makes the equation y+15=40 true?(1 point)
Responses
55
35
15
25
To find the number that makes the equation true, we can substitute each number from the set into the equation and see which one satisfies it.
Let's try substituting 55 into the equation:
55 + 15 = 70
This does not satisfy the equation y + 15 = 40, so 55 is not the correct answer.
Let's try substituting 35 into the equation:
35 + 15 = 50
This does not satisfy the equation y + 15 = 40, so 35 is not the correct answer.
Let's try substituting 15 into the equation:
15 + 15 = 30
This does not satisfy the equation y + 15 = 40, so 15 is not the correct answer.
Finally, let's try substituting 25 into the equation:
25 + 15 = 40
This satisfies the equation y + 15 = 40, so 25 is the correct answer.
Therefore, the number from the set {15, 25, 35, 55} that makes the equation true is 25.