Question
1.Solve the simultaneous equations:
5x + 4y = 13
3x + 8y = 5
5x + 4y = 13
3x + 8y = 5
Answers
helper
Multiply * -2 (5x + 4y = 13)
-10x - 8y = -26
3x + 8y = 5
-7x = - 21
x = 3
substitute x = 3 in one of the equations and solve for y
-10x - 8y = -26
3x + 8y = 5
-7x = - 21
x = 3
substitute x = 3 in one of the equations and solve for y
Shivi
Where do you get the -2?