4.8
A= 2
So we have 5a + 11 + 3a - 7 = -4 Start by combining common terms such as the 5a and 3a to give you 8a and 11 and -7 to give you 4. So now your equation is 8a + 4 = -4. Subtract 4 from both sides gives you 8a = -8. Divide -8 by 8 to give you a = -1, your solution.
2a+5a+9a = 16a
a = 0
If: 5a-1+a = 11 Then: a = 2
4.8
A= 2
6a + 5a = -11 Combining like terms: 11a = -11 Dividing by 11: a = -1
1a (or just a for short).
5a-20+2a = 6a-11 5a+2a-6a = 20-11 1a = 9 a = 9
So we have 5a + 11 + 3a - 7 = -4 Start by combining common terms such as the 5a and 3a to give you 8a and 11 and -7 to give you 4. So now your equation is 8a + 4 = -4. Subtract 4 from both sides gives you 8a = -8. Divide -8 by 8 to give you a = -1, your solution.
2a+5a+9a = 16a
5a+5=6a-7
a + 3a + 5a = 180 9a =180 a = 20
Answer to: 5a + 1 = a - 3a = -1
a = 0