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Sagot :
Answer:
see explanation
Step-by-step explanation:
1
4(5 + 3n) - 7 ← distribute parenthesis by 4
= 20 + 12n - 7 ← collect like terms
= 12n + 13
2
6 - (10n + 8) ← distribute parenthesis by - 1
= 6 - 10n - 8 ← collect like terms
= - 10n - 2
combining (adding) the 2 expressions
12n + 13 - 10n - 2 ← collect like terms
= 2n + 11
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