sanjaysm3579 sanjaysm3579

18-07-2021
Mathematics

contestada

by solving a pair of linear equation X + Y is equal to 20 and x-y=10 the value of 'x' and 'y' are

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dammyzee dammyzee

18-07-2021

Answer:

x=15, y=5

Step-by-step explanation:

x+y=20

x-y=10

Adding both equations;

(x+x) + (y-y) = 20+10

2x = 30

x = 30/2 = 15

Substitute x=15 into x+y=20

y= 20-x = 20-15= 5

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