By elimination: x = 3 and y = 0
y=16 x= -4
Subtract by 7x and divide by 2.
x + 8y = 3 therefore 2x + 16y = 6 (a) 2x + 3y = -7 (b) Subtract (b) from (a): 13y = 13 so y = 1 and x = -5
(2,-2)
9y subtract 11 equals 7
By elimination: x = 3 and y = 0
y=16 x= -4
Subtract by 7x and divide by 2.
x + 8y = 3 therefore 2x + 16y = 6 (a) 2x + 3y = -7 (b) Subtract (b) from (a): 13y = 13 so y = 1 and x = -5
(2,-2)
Subtract two from both sides and you are left with X equals -5
U can subtract 18 from each side of the equation.
To solve x + 1.4 = 2, subtract 1.4 from each side; x = 0.6
The elimination method only works with simultaneous equations, hence another equation is needed here for it to be solvable.
16
You cannot solve one linear equation in two variables. You need two equations that are independent.