Need help with a equation Maths Question
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Need help with a equation Maths Question

[From: ] [author: ] [Date: 12-03-17] [Hit: ]
-Its simple just plug it in. 2(-5)=-10 + 3(11) which = 23, and then the other way it is 7. So yes, yes it is right-2x + 3y = 233x + 2y = 76x + 9y = 696x + 4y = 145y = 55y = 11x = -5You certainly gotthe right answer.-You got the right answer.......

So, plug -5 for x in 2x+3y=23 and 11 for y ==> 2(-5)+3(11) = 23 ==> -10+33 = 23 ==> 23=23.
Do the same for 3x+2y = 7 ==> 3(-5)+2(11) = 7 ==> -15+22 = 7 ==> 7=7

You did it right! :D

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You are right. I will use elimination.
4x + 6y = 46
9x + 6y = 21
Subtract the second equation from the first.
4x - 9x = 46 - 21
-5x = 25
x = -5
Substitute.
2(-5) + 3y = 23
-10 + 3y = 23
3y = 33
y = 11

-
You know that you can check your answer without reworking the problem.

Just substitute -5 for x and 11 for y in each equation and see if the
equations speak the truth.

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I'ts simple just plug it in. 2(-5)=-10 + 3(11) which = 23, and then the other way it is 7. So yes, yes it is right

-
2x + 3y = 23
3x + 2y = 7
6x + 9y = 69
6x + 4y = 14
5y = 55
y = 11
x = -5
You certainly got
the right answer.

-
You got the right answer.
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