Substitution method y = 2x - 6 5x + 2y = -3

y = 2x - 6 ;
5x + 2y = -3;
5x + 2(2x - 6) = -3 ;
5x + 4x - 12 = -3 ;
9x - 12 = -3 ;
9x = -3 + 12 ;
9x = 9 ;
x = 9/9 ;
x = 1 ;
y = 2(1) - 6 ;
y = 2 - 6 ;
y = -4;
Solution set: (1, -4)

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Asked 8/26/2013 12:14:40 AM

Updated 186 days ago|1/12/2018 12:59:54 AM

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Use substitution to solve the system y=2x-6 5x+2y=-3

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Updated 11/16/2014 4:05:37 PM

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The solution set for y = 2x - 6, 5x + 2y = -3 is {x = 1, y = -4}

5x + 2(2x - 6) = -3;

5x + 4x - 12= -3;

9x = -3 + 12;

9x = 9;

x = 9/9 = 1;

y = 2x - 6;

y = 2 - 6;

y = -4

5x + 2(2x - 6) = -3;

5x + 4x - 12= -3;

9x = -3 + 12;

9x = 9;

x = 9/9 = 1;

y = 2x - 6;

y = 2 - 6;

y = -4

Added 11/16/2014 4:05:37 PM

This answer has been confirmed as correct and helpful.

the sum of two numbers is 60 and the difference is 10 what are the numbers.

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Updated 5/14/2014 9:02:34 PM

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Let x and y be the two numbers, we were given:

x + y = 60

x - y = 10

adding up the above equations the result is:

2x = 70

x = 35;

35 + y = 60

y = 60 - 35 = 25

the sum of two numbers is 60 and the difference is 10, the numbers are 35 and 25.

x + y = 60

x - y = 10

adding up the above equations the result is:

2x = 70

x = 35;

35 + y = 60

y = 60 - 35 = 25

the sum of two numbers is 60 and the difference is 10, the numbers are 35 and 25.

Added 5/14/2014 9:02:34 PM

This answer has been confirmed as correct and helpful.

Confirmed by jeifunk [5/14/2014 9:03:02 PM]

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