Using substitution, which number from the set {15, 25, 35, 55} makes the equation y+15=40 true?(1 point)
Responses
25
25
35
35
15
15
55
To solve the equation using substitution, we need to substitute each number from the set {15, 25, 35, 55} into the equation y + 15 = 40 and see which number makes it true.
Let's substitute the first number, 15:
15 + 15 = 40
30 = 40
Since 30 does not equal 40, 15 is not the correct number.
Now let's substitute the second number, 25:
25 + 15 = 40
40 = 40
Since 40 is equal to 40, 25 is the correct number.
Therefore, the number from the set {15, 25, 35, 55} that makes the equation y + 15 = 40 true is 25.