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33 votes
33 votes
What is the solution to the equation 7(a-10)=13-2(2a+3)?

26
O a=11
O a=7
89
O a = 11
O a=621

User Wouter Overmeire
by
2.8k points

1 Answer

10 votes
10 votes

Answer:


a = 7

Explanation:


1. \: 7a - 70 = 13 - 4a - 6 \\ 2. \: 7a - 70 = - 4a + 7 \\ 3. \: 7a = - 4a + 7 + 70 \\ 4. \: 7a = - 4a + 77 \\ 5. \: 7a + 4a = 77 \\ 6. \: 11a = 77 \\ 7. \: a = (77)/(11) \\ 8. \: a = 7

User Bahri Mohamed Aziz
by
2.9k points