Solving systems of equations by substitution, Algebra

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How do you find y & x equal with -4x+y=6 and -5x-y=21

Related Discussions:- Solving systems of equations by substitution

College Algebra Test Quesion, An inlet pipe can fill a large water tank in ...

An inlet pipe can fill a large water tank in 4 hours. Another inlet pipe can fill the same water tank in 5 hours. Given an empty water tank, at 8:00 AM, activate both pipes. What t

Literal equations and formulas, how do u solve the problem 2m=-6n-5 because...

how do u solve the problem 2m=-6n-5 because i tried everything and i cant get the answer?...

#Case 1, The diet problem, one of the earliest applications of linear progr...

The diet problem, one of the earliest applications of linear programming, was originally used by hospitals to determine the most economical diet for patients. Known in agricultu

Factoring, How can x raised to the second power mines x mines 2 . can be fa...

How can x raised to the second power mines x mines 2 . can be factored as (x+1)(x-2)

Lisa, (8x^3+6x^2-8x-15)+(4x-5)

(8x^3+6x^2-8x-15)+(4x-5)

Simpler method to solve exponential equations, Simpler method Let's beg...

Simpler method Let's begin by looking at the simpler method. This method will employ the following fact about exponential functions. If   b x   = b y      then          x

Proofs, m?1=m?2 m?2=75 m?1=75

m?1=m?2 m?2=75 m?1=75

Ratios, How do you simplfly 25 and 15 if u say 5 and the teacher thinks it'...

How do you simplfly 25 and 15 if u say 5 and the teacher thinks it''s wrong?

Integers, how do we add integers

how do we add integers

Basic fact, What is a Math Basic Fact?

What is a Math Basic Fact?

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