4.
0.2x + 0.1y = 25
2(x - 2) - 1.6y = 116
simultaneous equation
step by step
Answers
Answered by
4
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
Answered by
3
Answer:
answer y =0
I hope it will help u
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