Question

solve by elimination method
2x+5y=20 and 6x-5y=12

Answer 1

Answer:

2x+5y=20

5y=20-2x

y=(20-2x)/5

thus

6x-5y=12

6x-5[(20-2x)/5]=12

after solving

x=8

2x+5y=20

2(8)+5y=20

after solving

y=4/5