Answer:
[tex]1. \: 13[/tex]
[tex]2. \: 13b[/tex]
[tex]3. \: 22ab[/tex]
[tex]4. \: 2x + 11y[/tex]
[tex]5. \: 11x {}^{2} + 9x \: - 7[/tex]
just match the whole numbers with its algebraic expressions and then add it. :)
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