ariellewallenst7863 ariellewallenst7863

13-12-2019
Mathematics

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2. The difference of two numbers is 18. Their sum is 42. Find the two numbers.

a) Write a system of equations.

b) Solve using the elimination method,

Bathod

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ummuabdallah ummuabdallah

13-12-2019

Answer: The numbers are 30 and 12

Step-by-step explanation:

Let x and y represent the two numbers

X - Y = 18 -------(1)

X + y = 42---------(2)

(1) + (2)

2x = 60

Divide bothside by 2

X= 30

(2) - (1)

2Y = 24

Divide bothside by 2

Y = 12

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