Answer:
Explanation:
Okay
x+2y=7
x+2y-2y=7-2y
x=7-2y
4x+2y=10
4x+2y-2y=10-2y
4x=10-2y
divide both sides by 4
4x/4=(10/4)-(2y/4)
x=(5-y)/2
Hope this helps! ^^
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