<span>0,5*sin(2*x)=0,25 sin(2*x)=0,5 2*x=3,14/6+2*n*3,14 x=3,14/12+n*3,14 (n- любое целое число).</span>
-9y + 3 = 3*(8y + 25)
-9y + 3 = 24y + 75
-9y - 24y = 75 - 3
-33y = 72
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