Question

The sum of two numbers is 7. The difference between two times the larger number and the smaller one is 5. Find the numbers. you can use the substitution or elimination method.

plz help

my test starts on this coming Monday.​​

Answer 1

Answer:

first no.=-9

second no.=-2

Step-by-step explanation:

let the first no. be=x

let the second no. be =x+7

given that:2(x+7)-x=5

solution :

2x+14-x=5

x+14=5

x=-9

first no.=-9

second no.=-2

Answer 2

Answer:

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Step-by-step explanation:

Let as take the two numbers, as x and y

1. x + y = 7 (given)

2. 2x - y = 5 (given)

y = 7 - x (from equation 1)

2x - (7 - x) = 5 (substitute y in equation 2)

2x + x - 7 = 5

3x = 12

x = 4

y = 7 - 4 (substitute x in equation 1)

y = 3

The two numbers are 4 and 3