answersLogoWhite

0


Best Answer

4a - 5b = 7

4a +5b = 17

From the first equation:

4a = 7 + 5b

substitute this value in the second equation:

7 + 5b + 5b = 17

7 + 10b = 17

10b = 10

b = 1

Now,solve for a :

4a - 5(1) = 7

4a = 7 + 5

4a = 12

a = 3

User Avatar

Wiki User

14y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: 4a - 5b equals 7 4a plus 5b equals 17?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Solve this equation using addition method 4a subtract 5b equals 7 and 4a plus 5b equals 17?

Add the equations: 4a + 4a - 5b + 5b = 7 + 17 ie 8a = 24 a = 3, so b = 1


Which is not a coefficient in the following expression -4a-2c plus 9 plus 5b equals 6a?

It is 9


What is 5ab plus 4a-b-2ab plus 5b?

5ab-2ab+4a-b+5b = 3ab+4a+4b


What is the rational expression of the quotient 4a plus b and 2a - 5b?

The expression is: (4a+b)/(2a-5b)


2a plus 3b - 4a plus 5b?

8b -2a


5b-4 equals 2b plus 17?

b=7


What is 7a plus 3b-4a-5b?

3a - 2b


What is the order pair for 4a - 5b equals 7 and 4a plus 5b equals 17?

Simultaneous Equations 4a - 5b = 7 4a + 5b = 17 Add the two , this will eliminate 'b' 8a = 24 Divide both sides by '8' a = 3 When a= 3 , substitute into eityher equation for 'b'. 4(3) + 5b = 17 12 + 5b = 17 5b = 17 - 12 = 5 5b = Divide both sides by '5'. Hence 'b = 1'.


Factor the common monomial 4a plus 20b?

4(a+5b)


Simplify fully 4a plus 5b minus 2a plus b?

2a+6b


6a - 5b equals 9 2a plus 5b equals 23?

(4, 3)


What does ab over b divided by 4a over 5b equal?

(ab/b) / (4a/5b) =(ab / b) * (5b / 4a) = (5ab2 / 4ab)= 5 / (4b)