8,3+4,5-6,3=12,8-6,3=6,5
4,1-5,6+6,9= -1,5+6,9=5,4
0,2+4,8-6 1/8=5-49/8=-9/8=-1 1/8
3 1/9-3 1/2-2 1/9=-7/18-19/9=-2 1/9
8,4-х+3,6=18
-х=18-3,6-8,4
-х=6
х=-6
1 м³ = 1000 дм³ = 1 000 000 см³ = 1 000 000 000 мм³ = 1000 литров
8 + у = -3
у = -3 -8
у = -11
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Проверка
8 + (-11) = - 3
8 - 11 = -3
-3 = -3
Sin(pi-2x)-2cos(pi/2-2x)=√3<span>/2
</span>sin2х-2sin2х=√3/2
-sin2х=<span>√3/2
</span>sin2х=-<span>√3/2
</span>2х=(-1)ⁿ (-π/3)+2πn, n∈Z
2х=(-1)ⁿ⁺¹ <span>π/3+2πn, n∈Z
</span>х=(-1)ⁿ⁺¹ <span>π/6+πn, n∈Z</span>