-3,5с*с ^2 -2,8б ^2
-7*49-14*25=-343-350=-693
53-x=46587
x=46587-53
x=46534
<h3>7²ˣ⁺¹ • 7³⁻ˣ = 49</h3><h3>7²ˣ⁺¹ • 7³⁻ˣ = 7²</h3><h3>7²ˣ⁺¹⁺³⁻ˣ = 7²</h3><h3>2x + 1 + 3 - x = 2</h3><h3>2x - x = 2 - 1 - 3</h3><h3>x = - 2</h3><h3><u><em>ОТВЕТ: - 2</em></u></h3><h3><u><em /></u></h3>
<span>50кв.м 50кв.дм - 21 ев.м 14кв.дм = 29кв.м 36кв.дм</span>
390
250+140=390
390-140=250