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1)3x-y=7
2)2x-y=8
2) * (-1) so it becomes
1)3x-y=7
2)-2x+y=-8
1)+ 2) so it becomes
3x=(-2x)-y+y=7+(-8)
x= -15 that meens y=8+2x=8-30=-22
Improved Answer:
3x-y = 7
2x+y = 8
Add both equations together:
5x = 15
x = 3
Substitute the value of x into the equations to find the value of y:
x = 3 and y = 2
What else can I help you with?
If x equals 4 then 2x plus 7 equals?
If x=4 then 2x+7 =
What is 2x plus 8 plus x equals 2x plus 15?
X=7
What is -7 plus 2x equals x plus 8?
-7 +2x = x + 8 2x - x = 7 + 8 x = 15
Is 2x plus 7 equals 8 equivalent to 2x equals 1?
no x would be 0.5 because two times 0.5 is 1 ( 2x ) and then add 7 equals 8 ( plus seven equals 8 )
Solve 2x plus 3 equals 7?
2x+3 = 7 2x = 7-3 2x = 4 x = 2
Is 3xy plus 4y equals 7 a linear equation?
No, it is not.
Find the slope of the line of 2x plus 2y equals 7?
The slope of the line of 2x plus 2y equals 7 is (7/2x - 1).
What is 2x plus 8y plus 7 equals 0?
2x = -7 - 8y
If x equals 4 then 2x plus 7 equals?
If x=4 then 2x+7 =
8x-7 plus 2x equals 6 plus 5x plus 2?
8x-7 plus 2x equals 6 plus 5x plus 2?
What is 2x plus 8 plus x equals 2x plus 15?
X=7
What is -7 plus 2x equals x plus 8?
-7 +2x = x + 8 2x - x = 7 + 8 x = 15
6x - 8 plus 2x - 5 equals 7 - 2x?
6x - 8 + 2x - 5 = 7 - 2x ?
Is 2x plus 7 equals 8 equivalent to 2x equals 1?
no x would be 0.5 because two times 0.5 is 1 ( 2x ) and then add 7 equals 8 ( plus seven equals 8 )
Solve 2x plus 3 equals 7?
2x+3 = 7 2x = 7-3 2x = 4 x = 2
8x-7 plus 2x equals 6 plus 5x plus 2 equals?
DIE
What is -3x plus -18 equals 2x plus 7?
-3x + (-18) = 2x + 7 +18 +18 -3x = 2x +25 -2x -2x -5x = 25 ----- ----- -5 -5 x=-5 *------- equals a division line
