Simultaneous Equations Flashcards
1
Q
5x + 3y = 41
2x + 3y = 20
A
x=7
y=2
2
Q
5x + y = 11
3x − y = 9
A
x=2.5
y=-1.5
3
Q
x + 7y = 64
x + 3y = 28
A
x=1
y=9
4
Q
4x − 4y = 24
x − 4y = 3
A
x=7
y=1
5
Q
2x + 4y = 14
4x − 4y = 4
A
x=3
y=2
6
Q
David buys 2 DVDs and 2 CDs in a shop and in total they cost £18.
Ellie buys 3 DVDs and 2 CDs in the same shop and they cost £22.
Form two equations and solve to find the cost of each DVD and each CD.
A
DVD=£4
CD=£5
7
Q
2x + 4y = 26
3x − y = 4
A
x=3
y=5
8
Q
3x + 2y = 16
2x − 3y = 2
A
x=4
y=2
9
Q
3x − 2y = 14
x + 2y = 10
A
x=6
y=2
10
Q
3x + 5y = 1
2x − 3y = 7
A
x=2
y=-1
11
Q
3x − y = 23
2x + 3y = 8
A
x=7
y=-2
