To simplify the expression 2x + 11y - 1 + 5x - 3y + 7, we can combine like terms:
2x + 11y + 5x - 3y - 1 + 7
Combining the x terms: 2x + 5x = 7x
Combining the y terms: 11y - 3y = 8y
Combining the constant terms: -1 + 7 = 6
So the simplified expression is: 7x + 8y + 6
2x+11y-1+5x-3y+7.
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