5b = 21 + 4b 5b - 4b = 21 + 4b - 4b b = 21
b= -162
-5b = 55 To get b by itself, divide both sides by -5. (-5b)/(-5) = (55)/(-5) -5 / -5 = 1, 55 / -5 = -11 1(b) = -11 b = -11
it is just 5b
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
If: 5b = 30 Then: b = 6
-b+5b-2b=2b
10a - 5b = 25 So 5b = 10a - 25 and hence b = 2a - 5
(ab/b) / (4a/5b) =(ab / b) * (5b / 4a) = (5ab2 / 4ab)= 5 / (4b)
The GCF is 5b. 5b squared is 25b or (5 x 5) x b 15b is (3 x 5) x b Therefore; 5 x b in each or 5b is GCF
The expression is: (4a+b)/(2a-5b)
5b + 15 = 5(b + 3)
5b = 21 + 4b 5b - 4b = 21 + 4b - 4b b = 21
5b
5ab-2ab+4a-b+5b = 3ab+4a+4b
5b + 3 = 10 - 3 - 3 5b = 7 5b/5 7/5 b= 1.5 There you go !
b= -162