Question

Solve the following pair of simultaneous equations using the elimination method.
3x - y =14
2x + y = 26
Solve the following pair of simultaneous equations by substitution
7x – 3y= 1
2x + y = 17

Answer 1

Answer:

GET75

a)3x-y=14

+2x+y=26

_________

5x=30

x=30/5

x=6

2x+y=26

2(6)+y=26

8+y=26

y=26-8

y=18

b)2x + y = 17

y=17-2x

7x-3(17-2x)=1

7x-51+6x=1

7x+6x=1+51

13x=52

x=4

y=17-2x

y=17-2(4)

y=17-8

y=9

Answer 2

Step-by-step explanation:

5x =30

x= 30/5

x=6

2x+y=16

2(6)+y=16

12+y=16

y=16-12

y=4