SOLUTION: If a + 3b = 13 and a + b = 5 ,the value of b is ....
Algebra.Com
Question 548674: If a + 3b = 13 and a + b = 5 ,the value of b is ....
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
Subtract the second equation from the first equation to get 2b = 8 --> b = 4.
RELATED QUESTIONS
what is the value if a=3 and b=5... (answered by Alan3354)
If a-3b=-1/5 and a+b=15, then what is the value of the polynomial... (answered by stanbon)
If b is a prime integer such that 3b>10>(5/6)b , what is one possible value of... (answered by KMST)
3a=18-3b
What is the value of... (answered by Leaf W.)
if a=2x+3 and b=4x-7, for what value of x is... (answered by Tatiana_Stebko)
if a-b=5 and ab=-1, what is the numerical value of... (answered by AnlytcPhil)
If a + b = 6, what is the value of 3a +... (answered by praseenakos@yahoo.com)
3a - 2b =21
a + 3b = -4
what is the value of each variable (a and... (answered by MathLover1)
if a + b = -3 and b - c = 6, find the value of {{{2a^2 - 3b^2 + c^2}}}
(answered by greenestamps,math_tutor2020,ikleyn)