5+(5-5)*5=5
55-5*5=30
5*5+5*5=50
1/2 и1/18 9/18 и 1/18; 36, 54, 72.
3/10 и 33/100 30/100 и 33/100; 200, 300, 400
5/8 и 2/3 20/24 и 16/24; 48, 72,
7/15 и 5/9 21/45 и 15/45; 270, 405
1)-5602100
2)-2845000
3)-750
Решение
1) log₂ 40 - log₂ 2,5 = log₂ (40/2,5) = log₂ 16 = log₂ (2⁴) = 4*log₂ 2 = 4
2) log₃ 1,5 + log₃ 18 = log₃ (1,5 * 18) = log₃ 27 = log₃ 3³ = 3*log₃ 3 = 3
3) log₄ 24 - log₄ 1,5 = log₄ (24/1,5) = log₄ 16 = log₄ 4² = 2*log₄ 4 = 2