3 a b =3a b
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The given expression can be simplified to: 3b-a
a + b + c = 180 b = 3a c = 5a Substituting the values of b and c into the first equation. a + 3a + 5a = 180 or 9a = 180 so that a = 20 then b = 3a = 3*20 = 60 and c = 5a = 5*20 = 100
2a+2b+3a+3b+a+b= 6a+6b 2a+3a+a=6a 2b+3b+b=6b
The solution for the value of 3a would be -3. The equation would be 6a + 3(4) = 2.
the 3 in 3a is called a coefficient.