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Solve this system by using substitution:
 
y=7x-10
y=-3

Sagot :

Deathstrike001idn
lets use substitution
y=7x-10
y=-3

so 
-3=7x-10
7=7x
1=x

now lets check
y=7(1)-10
y=-3

therefore both equations have the same value

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