<span> (m-mn)-(n-mn)+(m+n)=<span> m<u>-mn</u>-<u>n</u>+<u>mn</u>+m+<u>n=</u>2m</span></span>
X+x/9=2
2x/9=2
2x=2×9
2x=18
x=18/2
x=9
Ответ: x=9.
арарарараррарарар) удачи)
A) (3² * 3⁵)²/27³ = (3²⁺⁵)²/(3³)³ = 3¹⁴/3⁹=3¹⁴⁻⁹=3⁵=243
б) 32²/[(2⁴)³ * 2⁶]=[(2⁵)²] / [2¹² * 2⁶] = 2¹⁰ / 2¹²⁺⁶=2¹⁰ / 2¹⁸ = 1/2⁸ = 1/256
в) (5⁴ * 10³) / (2³ * 25²) = (5⁴ * (2*5)³) / (2³ * (5²)²) =
=(5⁴ * 2³ * 5³) / (2³ * 5⁴) = (5⁴⁺³ * 2³) / (2³ * 5⁴) =
= (5⁷ * 2³) / (2³ * 5⁴) = 5⁷⁻⁴=5³=125