5x - 3y -7x + 2y +3x = (5-7+3)x + (-3+2)y = x - y
(1) 5x+y=-12 (2) 7x-3y=-30 From (1) one gets y = -12-5x Put into (2) 7x-3y = 7x -3 (-12-5x) = 7x + 36 +15 x = 22x +36=-30 22x = -30-36 = -66 so x = -3 and y=-12-5x = -12-5x-3= 3 The solution is (-3,3)
It is not possible to solve one equation in two unknowns (x and y). Two independent equations are required.
5x+3y
There is not an answer but you can factor it.3x+3y=3(x+y)
The given expression can be simplified to: 7x+4y
x+7x+3y-y =8x+2y =2(4x+y)
The expression can be simplified to: 7x+4y
The expression can be simplified to: 7x+4y
There are 3 terms in the algebraic expression of: 3y+9+7x
(14x-2y)+(7x-3y)+(-3x) = 14x-2y+7x-3y-3x =(14+7-3)x-(2+3)y =18x-5y
the simplest form of 5x + 3y +2x - 6y is 7x-3y
y=mx+b 7x+3y=21 3y=21-7x *****_ y=7-2.3x *****_ m= -2.3 negative
(7x-3y) + (2x+5y) = 9x+2y
7x+3y=-52 3(8x-y=-74) 7x+3y=-52 24x-3y=-222 7x=-52 + 24x=-222 31x=-274 x=8.8387
(3,3)
5x - 3y -7x + 2y +3x = (5-7+3)x + (-3+2)y = x - y