Question

4.
0.2x + 0.1y = 25
2(x - 2) - 1.6y = 116
simultaneous equation
step by step​

Answer 1

Answer:

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Step-by-step explanation:

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

Answer 2

Answer:

answer y =0

I hope it will help u