Question

Afla pe x din
(100-x:76)×35+1=876
5 la puterea a patra :5 la puterea a doua +5×(55la puterea intai-x )= 5 la puterea a treia

Answer 1

Răspuns:

$(100 - x \div 76) \times 35 = 875 \\ (100 - x \div 76) = 25 \\ (x \div 76 - 100) = 25 \\ x \div 76 = 125 \\ x = 9500$

${5}^{4} \div {5}^{2} + 5 \times ( {55}^{1} - x) = {5}^{3} \\ {5}^{2} + 5 \times (55 - x) = {5}^{3} \\ (x - 55) \times 5 + 25 = 125 \\ (x - 55) \times 5 = 100 \\ x - 55 = 500 \\ x = 555$