kathychavarria376 kathychavarria376

08-05-2020
Mathematics

contestada

Write and solve the system using any method:
Find the value of two numbers if their sum is 25
and their difference is 7.
This is a 3 part question; answer all 3 parts.
1. Write the first equation.
2. Write the second equation.
3. Write your solution

Respuesta :

saniahsookhram70 saniahsookhram70

08-05-2020

Answer:

1. x + y = 25

2. x - y = 7

3. x = 16, y = 9

Step-by-step explanation:

(x + y = 25) + (x - y = 7)

2x (the y cancels) = 32

32/2 = 16, x = 16

substitute x in either equation

16 + y = 25

y = 9

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