2x = y + 7
x - 2 = y
substitute the y from the second equation into the first:
2x = x - 2 + 7
2x = x+5
x = 5 --> y = 5 - 2
y = 3
Another straight line equation is needed such that both simultaneous equations will intersect at one point.
It seems to be some kind of simultaneous equation with too many equality signs in it.
Solving tne simultaneous equation gives x = 19.8 and y = -2.2
If: 3x+2y = 5x+2y = 14 Then: 3x+2y = 14 and 5x+2y =14 Subtract the 1st equation from the 2nd equation: 2x = 0 Therefore by substitution the solutions are: x = 0 and y = 7
It's a simultaneous equation and can be solved by elimination which works out as:- x = -4 and y = 1
The solutions work out as: x = 52/11, y = 101/11 and x = -2, y = -11
It is a simultaneous equation and when solved its solutions are x = 71/26 and y = 50/13
x = -1/5 and y = 14/5 Solved by forming a simultaneous equation and eliminating y.
(4,-1) solved by turning the information given into a simultaneous equation which worked out as x = 4 and y-1
That equation cannot be solved since there are 2 unknown in the equation (x and y) but only 1 equation. The number of unknowns must be equal to the number of equations (for simultaneous equations)
The elimination method only works with simultaneous equations, hence another equation is needed here for it to be solvable.
x = 5 and y = -8 Solved by forming a simultaneous equation and eliminating y in order to find the values of x and y.