15 = 5b
No unfortunately this is not an equation. An equation must end with an equals sign. 5b + 14 is simply two terms.
4a - 5b = 74a +5b = 17From the first equation:4a = 7 + 5bsubstitute this value in the second equation:7 + 5b + 5b = 177 + 10b = 1710b = 10b = 1Now,solve for a :4a - 5(1) = 74a = 7 + 54a = 12a = 3
-5b - 6 = -11Add 6 to each side of the equation:-5b = -5Divide each side by -5 :b = 1
Add the equations: 4a + 4a - 5b + 5b = 7 + 17 ie 8a = 24 a = 3, so b = 1
5b-15 = -10
(4, 3)
If: 5b = 30 Then: b = 6
really????? what grade are you in??? 5b b=3 so you plug in 3 for b giving you 5(3) then you multiply because its multiplication and you get 15
5b + 15 = 5(b + 3)
The answer is 7.
the answer
-5b - 6 = -11, first add 6 to both sides --> -5b -6 + 6 = -11 + 6 --> -5b = -5Then divide both sides by (-5): b = 1. Last substitute your answer into the original equation to make sure it check out:-5*(1) - 6 = -11 --> -5 -6 = -11