Best Answer

Add the equations: 4a + 4a - 5b + 5b = 7 + 17

ie 8a = 24

a = 3, so b = 1

User Avatar

Wiki User

โˆ™ 2010-05-23 19:13:22
This answer is:
User Avatar
Study guides


20 cards

A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

The sum or difference of p and q is the of the x-term in the trinomial

A number a power of a variable or a product of the two is a monomial while a polynomial is the of monomials

See all cards
844 Reviews

Add your answer:

Earn +20 pts
Q: Solve this equation using addition method 4a subtract 5b equals 7 and 4a plus 5b equals 17?
Write your answer...
Still have questions?
magnify glass
Related questions

Solve this equation using addition method -8x plus 3y equals -5 and 8x subtract 2y equals 6?

x=1, y=1

What is 6a - 5b equals 9 using addition method?

You need two equations to use the addition method.

Solving systems by elimination method X plus y equals 2 and 2x plus 7y equals 9?

Double first equation: 2x + 2y = 4 Subtract this from second equation giving 5y = 5 so y = 1 and x = 1

How do you solve each system by the addition method?

solve system equation using addition method 3x-y=9 2x+y=6

Solve the equation by substitution method x-y equals 5?


What number subtracted from 8 gives you 2 09?

8.00 − 5.91 = 2.09 (Method is to first subtract 2.09 from 8.00, which equals 5.91 If you then subtract 5.91 from 8.00 the answer will be 2.09)

How do you Solve this system of equations using the addition method 6a - 5b equals 9 2a plus 5b equals 23?

the answer

Use the substitution method to solve the following system of linear equations -3x-y equals 3 -3x-5y equals -21?

From first equation, -y = 3x + 3. Substitute in second equation: -3x + 5(3x + 3) = -21 ie 12x = -36 so x = -3 and y = -(-9 + 3) = 6. Easier method: subtract first equation from second giving -4y = -24 so y = 6, this in first equation gives -6 = 3x + 3, ie 3x = -9 so x = -3

How do I solve whole number equations that contain addition or subtraction?

The answer depends on the equation: there is no single method which can be used for all equations.

Solve py plus qz equals pq by charpit method in partial differential equation?


Completing the square method?

Completing the square is a method to solve quadratic equations. To use this method you take the number without a variable and subtract it from both sides, so that it is on the opposite side of the equation. Then add the square of half the coefficient of the x-term to both sides. This will give you a perfect square equation to solve for.

2x-3y equals -2 4x plus y equals 24 use substitution method and work the system of equation?

how do you use the substitution method for this problem 2x-3y=-2 4x+y=24

People also asked