y=5x-13;5x+2y=19 i need help i dont understand this
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Step-by-step explanation:
now given two equations
y=5x-13
this can be written as 5x-y=13...(1)
5x+2y=19...(2)
now solving these two equations
5x-y=13
5x+2y=19
-----------------
Change the signs of the second equation and cancel 5x
now
-3y=-6
y=2
Substitute y=2 in (1) or in (2)
5x-2=13
5x=13+2=15
x=3
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