0
Presumably this is a simultaneous equation question which can be solved using the elimination method?
4(x+2y = -1)
4x+3y = -9
First multiply all terms in the top equation by 4:
4x+8y = -4
4x+3y = -9
Subtract the bottom equation from the top equation in order to eliminate x remembering that a - - is equal to a + So -4 - -9 is equal to 5:
5y = 5 => y = 1
Substitute the value of y into the original equations to find the value of x:
Therefore: x = -3 and y = 1
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
How do you solve 3x plus 2y equals 4 4x plus 3y equals 7?
You need to organise your question properly. 3x+2y=4 4x + 3y= 7? Is 4 4x = 44x or 4-4x or 4+4x How can there be 2 equal signs in 1 equation?
Answer for 3y2-2y plus 6xy-4x?
3y2 - 2y + 6xy - 4x = y(3y - 2) + 2x(3y - 2) = (y + 2x)*(3y - 2)
Is 3x plus 2y equals 7 and -4x-3y equals 10 dependent?
Yes and their solutions are x = 41 and y = -58
What is 2x-3x plus 4x plus 3y-2y?
3x + y
What is 3y equals 4x plus 9 in standard form?
-4x + 3y = 9
Solve 4x plus 3y equals 8x plus y for y?
4x + 3y = 8x + y so 3y - y = 8x - 4x ie 2y = 4x so y = 2x
How do you solve 3x plus 2y equals 4 4x plus 3y equals 7?
You need to organise your question properly. 3x+2y=4 4x + 3y= 7? Is 4 4x = 44x or 4-4x or 4+4x How can there be 2 equal signs in 1 equation?
Answer for 3y2-2y plus 6xy-4x?
3y2 - 2y + 6xy - 4x = y(3y - 2) + 2x(3y - 2) = (y + 2x)*(3y - 2)
What is 2x plus 3y plus 4x plus 9y?
2x + 3y + 4x + 9y = 2x + 4x + 3y + 9y = 6x + 12y which can be simplified to 6(x + 2y)
5x plus 3y-x plus 10-2y?
5x + (3y-x) + (10-2y) = 5x + 3y - x + 10 -2y = 5x - x + 3y - 2y + 10 = 4x + y +10
What is 6x plus 3y-2x-5y?
4x-2y
What does 4x plus 3y-2x plus y equal?
4x+3y-2x+y 4x-2x+3y+y 2x+4y Taking out 2 common 2(x+2y) Hence the required answer is 2(x+2y)
Is 3x plus 2y equals 7 and -4x-3y equals 10 dependent?
Yes and their solutions are x = 41 and y = -58
What is 2x-3x plus 4x plus 3y-2y?
3x + y
What is 8x plus y plus 4x plus 2y?
It simplifies to: 12x+3y
What is 4x plus 3y plus x equals?
5x+3y
What is 3y equals 4x plus 9 in standard form?
-4x + 3y = 9
