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Juliette [100K]

2 years ago

6

The sum of two numbers is 40. The second number is 5 less than twice the first number. Let x represent the first number and let

y represent the second number. What is the value of the first number? Use the table to guess and check.

1 answer:

SashulF [63]2 years ago

7 0

Step-by-step explanation:

x+y=40

y=2x-5

$x = 40 - y \\ y = 2(40 - y) -5 \\ y = 80 - 2y - 5 \\ 3y = 75 \\ y =25 \\ x = 40 - y \\ x = 15$

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