<span>если ты имел виду а1=1 a2=-2</span>
<span>a</span>1<span> = 1</span><span>a</span>2<span> = -2</span><span>a</span>3<span> = -5</span><span>a</span>4<span> = -8</span><span>a</span>5<span> = -11</span>
а если а1=1 d=-2
<span>a</span>1<span> = 1</span><span>a</span>2<span> = -1</span><span>a</span>3<span> = -3</span><span>a</span>4<span> = -5</span><span>a</span>5<span> = -7</span>
<span></span>
62*1.8+32 = 94
10-15х+4,5=2,5-5х
13x+2=0