Substitution

solve equations by substitution:

x+y= 11
y=5x-25

Correct answer:

x =  6
y =  5

Step-by-step explanation:


x+y= 11
y=5x-25

x+y= 11
y=5•x-25

x+y = 11
5x-y = 25

x = 6
y = 5

Our linear equations calculator calculates it.



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