Question

Solve these simultaneous equations. Use any method you want 2x+y=22 X-y=5

Answer 1

Answer:

by using substuton method

2x=22-y

x=22-y/2                     equation (i)

so substuting the value x in x-y=5

22-y/2-y=5

22-y-2y/2=5

22-3y=10

22-10/3=y

12/3=y

4=y

now substitute the value of y in equation (i)

x=22-y/2

=22-4/2

=18/2

=9

therefore ,the value of x is 9 and y is 4

Step-by-step explanation:

Answer 2

Answer:

15 its not 22

Step-by-step explanation:

bec x y is 5 ya

soo 2 x 5 + 5=15

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