(2x+3y=10
<span>(x-2y=-9
1) </span>x-2y=-9
x=-9+2y
2)2(-9+2y)+3y=10
-18+4y+3y=10
7y=10+18
7y=28
y=4
3) x=-9+2*4
x=-1
<span>5sin8x=10</span>
<span>sin8x=10/5</span>
<span>sin8x=2</span>
<u><span>Ответ:sin8x=2</span></u>
<span>62−(12+2x)= </span>62-12-2x = 50-2x =