To form and solve simultaneous linear equations using elimination./substitution 2.3f-2.3g

Question 1

Solve

the following simultaneous equations by using elimination.

6x+ y = 18
4x+ y = 14

Answer 1

x=2
y=6

Question 2

Solve

the following simultaneous equations by using elimination.

4x+2y=10
x+2y=7

Answer 2

x=1
y=3

Question 3

solve the following simultaneous equations by using elimination.

2x+3y=1
7x+2y=−22

Answer 3

x= -4
y= 3

Question 4

The cost of buying a coffee and a tea in a cafe is £4.
The cost of buying a coffee and three teas in a cafe is £7.
Work out the cost of buying a coffee and the cost of buying a tea.

Answer 4

Coffee is £2.50
Tea is £1.50