# Property

The length of the rectangle-shaped property is 8 meters, less than three times the width. If we increase the width by 5% of a length and length reduce by 14% of the width, it will increase the property perimeter by 13 meters. How much will the property cost if per 1 square meter we will pay € 8.6?

x =  12235908

### Step-by-step explanation:

a = 3b - 8
2[(b + 0.05a) + (a-0.14 b)] = 2(a+b)+13
x = 8.6 · 2062 · 690

a = 3·b - 8
2·((b + 0.05·a) + (a-0.14·b)) = 2·(a+b)+13
x = 8.6 · 2062 · 690

a-3b = -8
0.1a-0.28b = 13
x = 12235908

Row 2 - 0.1 · Row 1 → Row 2
a-3b = -8
0.02b = 13.8
x = 12235908

x = 12235908/1 = 12235908
b = 13.8/0.02 = 690
a = -8+3b = -8+3 · 690 = 2062

a = 2062
b = 690
x = 12235908

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