Example of substitution method of linear equations, Mathematics

Describe some Example of substitution method of Linear Equations with solution.

Posted Date: 2/12/2013 3:11:43 AM | Location : United States





Solve the given via substitution method

            2x + y = 8

            3x - 2y = -2

Solution

Solve the first equation for y

            y = 8 - 2x

Now substitute this value of y into the second equation and then solve for x

            3x - 2y = -2

            3x - 2 (8-2x) = -2

            x = 2

Now substitute this value of x into either the first or the second original equation and then solve for y

            2x + y = 8

            (2) (2) + y = 8

            y = 4

Posted by Aliena | Posted Date: 2/12/2013 3:12:22 AM


Related Discussions:- Example of substitution method of linear equations, Assignment Help, Ask Question on Example of substitution method of linear equations, Get Answer, Expert's Help, Example of substitution method of linear equations Discussions

Write discussion on Example of substitution method of linear equations
Your posts are moderated
Related Questions
DEVELOPING AN UNDERSTANIDNG OF MULTIPLICATION :  The most important aspect of knowing multiplication is to understand what it means and where it is applied. It needs to be first i


Question: Classify the following differential equations as linear/nonlinear. Also, what is the order of the following differential equations? Xy'-2y =x Xy'' -2y' =xsin(y)

Steps for Integration Strategy 1. Simplify the integrand, if possible This step is vital in the integration process. Several integrals can be taken from impossible or ve

a.      Random or probability sampling methods they involve: Simple random sampling Systematic sampling Stratified sampling Multi stage sampling   b.

how many times In a 12 hour period will he numbers add up to 6? (hint 3:00 is one answer0

The sum of -4 and a number is equal to -48. What is the number? Let x = the number. Because sum is a key word for addition, the equation is -4 + x = -48. Add 4 to both sides o

Ten is decreased through four times the quantity of eight minus three. One is then added to in which result. What is the final answer? The area of a square whose side measures

If three times the larger of the two numbers is divided by the smaller, then the quotient is 4 and remainder is 5. If 6 times the smaller is divided by the larger, the quotient is

The probability that a leap year will have 53 sunday is ? and how please explain it ? (a)1/7    (b) 2/7    (c) 5/7    (d)6/7 Sol) A leap year has 366 days, therefore 52 weeks i.e