6x+3y=12
2x-y=2
By elimination and substitution method
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Step-by-step explanation:
Make y the subject in one equation: 2x+y=12 => y=12−2x.
Substitute into the second equation and solve for x : x+y=7 => x+12−2x=7 => x=5.
Use this value to solve for y : x+y=7 => 5+y=7 => y=2.
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