10 times the first of 2 consecutive even integers is 8 times the second. Find the integers.
Let the first integer be x. Let the second integer be y. We're given:
10x = 8(x + 2)
Multiply through:
10x = 8x + 16
To solve for x, we type this equation into our search engine and we get:
x = 8
Since y = x + 2, we plug in x = 8 to get:
y = 8 + 2
y = 10
Now, let's check our work. Does x = 8 and y = 10 make equation 1 hold?
10(8) ? 8(10)
80 = 80 <-- Yes!
Let the first integer be x. Let the second integer be y. We're given:
- 10x = 8y
- We also know a consecutive even integer means we add 2 to x to get y. y = x + 2
10x = 8(x + 2)
Multiply through:
10x = 8x + 16
To solve for x, we type this equation into our search engine and we get:
x = 8
Since y = x + 2, we plug in x = 8 to get:
y = 8 + 2
y = 10
Now, let's check our work. Does x = 8 and y = 10 make equation 1 hold?
10(8) ? 8(10)
80 = 80 <-- Yes!