Question

Simplify
1. 7t + 9 - 3t - 89
2. t + 6n + 7t - 5n
3. 2ab + 3bc - 5ab + bc
4. 3.x2 + 5y2 - 4xy + 7x2 - 3y2 5. a3 + 363 -3 + 3a3 - 353 + c3
Solve this ​

Answer 1

Answer:

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