Формула: Р=а×n где (n) равна количеству сторон
Решение: 16×6=96
1) 9х-144=126; 9х=126+144; 9х = 270; х=30.
2) 28х+140=224; 28х=224-140; 28х=84; х=3.
3) х+76=7*15; х+76=105; х=29.
4) х-3=144/36; х-3= 4; х=7.
5) 21у-168=84; 21у= 84+168; 21у=252; у=12.
6) х+66=18*4; х+66= 72; х =72-66; х=6
Пример не правильно написан.
sin(arcsin3/5)cos(arccos4/5)-cos(arcsin3/5)sin(arccos4/5)=3/5*4/5-4/5*3/5=0
![2.4(x + 0.98) = 4.08 \\ 2.4x + 2.352 = 4.08 \\ 2.4x = 4.08 - 2.352 \\ 2.4x = 1.728 \\ x = 1.728 \div 2.4 \\ x = 0.72](https://tex.z-dn.net/?f=2.4%28x+%2B+0.98%29+%3D+4.08+%5C%5C+2.4x+%2B+2.352+%3D+4.08+%5C%5C+2.4x+%3D+4.08+-+2.352+%5C%5C+2.4x+%3D+1.728+%5C%5C+x+%3D+1.728+%5Cdiv+2.4+%5C%5C+x+%3D+0.72)
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