Y9 algebra 1 Simultaneous Equations byElimination Method

1.
Simultaneous Equations By the end of the lesson you will be able to : • Solve simultaneous equations by the elimination method.

2.
Solve by the substitution method As you see it demands a considerable work due to the fact that the unknowns are always accompanied by coefficients different from 1.

3.
Elimination Method 3 x + y = 9 5 x y = 7

4.
5 x + 3 y = 29 x + 3 y = 13 x = 4 y = 3

5.
3 x 2 y = 8 2 x 2 y = 4 x = 4 y = 2

6.
2 x 8 y = 2 2 x 3y = 7 x = 5 y = 1

7.
3 x + 2 y = 22 x + y = 9 x = 4 y = 5

8.
2 x + y = 7 3 x + 2 y = 12 x = 2 y = 3

9.
Let's redo the first exercise we solved in this class, but now by using elimination method.

10.
3 x + 4 y = 18 5 x 3 y = 1 x =2 y = 3

11.
The sum of two numbers is 12 and their difference is 4.8. Find the numbers. x = 8.4 y = 3.6

12.
Solve from Book pages 110111

Y9 algebra 1 Simultaneous Equations byElimination Method

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Y9 algebra 1 Simultaneous Equations byElimination Method