How do you use substitution to solvey=122x-y=4
1 answer:
y = 12.
<em>Put the value of y to the equation 2x - y = 4:</em>
2x - 12 = 4 <em>add 12 to both sides</em>
2x = 16 <em>divide both sides by 2</em>
x = 8
<h3>Answer: x = 8 and y = 12</h3>
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