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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

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
asked 75.5k views
13 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

asked
User Jtomaszk
by
7.6k points

1 Answer

13 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

answered
User Aleien
by
8.9k points
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