27х + 277у = 85.
(0,5х + 0,5у)*102 = 91,5как это решать , как выразить икс или игрик ?

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To solve this system of equations, we can first simplify the second equation:

(0.5x + 0.5y) * 102 = 91.
Dividing by 102 on both sides
0.5x + 0.5y = 0.8970588

Now we can use the first equation to express one variable in terms of the other. Let's solve for y:

27x + 277y = 85.
277y = 85.8 - 27
y = (85.8 - 27x) / 277

Now substitute this expression for y into the simplified second equation:

0.5x + 0.5 * (85.8 - 27x) / 277 = 0.897058
0.5x + 0.429805 = 0.897058
0.5x = 0.467253
x = 0.9345076

Now substitute this value of x back into the expression for y to find its value:

y = (85.8 - 27 * 0.9345076) / 27
y ≈ 0.1044221

Therefore, the solution to the system of equations is x ≈ 0.9345076 and y ≈ 0.1044221.