Question

0.2x - 0.1y = 25
2(x-2) - 1.6y = 116
simultaneous linear equations question ....​

Answer 1

Answer:

0.2x+0.1y=25...(i)

2(x−2)−16y=116...(ii)

By solving (ii) eq.

2x−4−16y=116

2x−1.6y=120

x−0.8y=60×2

0.2x+0.1y=25×8

⇒x−0.8y=60

1.6x+0.8y=200

2.6x=260

x=  

216

2600

​  

 

x=100

∴0.2(100)+0.1y=25

20+0.1y=25

0.1y=5

y=00