Answer:
Step-by-step explanation:
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Answer: 2n
Step-by-step explanation:
Silvia is n, sister is n, total is n+n=2n.
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y = 3x-2x∧2+5x∧3
When we replace x with value 3 we get
y = 3 * 3 - 2 * 3∧2 + 5 * 3∧3 => y = 9-2*9+5*27 => y = 9-18+135 => y = 126
good luck!!!