Question

Using substitution, which number from the set {15, 25, 35, 55} makes the equation y+15=40 true?(1 point)
Responses

35
35

15
15

55
55

25
25
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Answer 1

Substituting 35 into the equation, we get:
y + 15 = 40
35 + 15 = 40
50 = 40, which is not true.

Substituting 15 into the equation, we get:
y + 15 = 40
15 + 15 = 40
30 = 40, which is not true.

Substituting 55 into the equation, we get:
y + 15 = 40
55 + 15 = 40
70 = 40, which is not true.

Substituting 25 into the equation, we get:
y + 15 = 40
25 + 15 = 40
40 = 40, which is true.

Therefore, the number from the set {15, 25, 35, 55} that makes the equation y + 15 = 40 true is 25.