Question

Рівняння 1)3х(5-х)=11

Answer 1

3x - (5 - x) = 11;

3x - 5 + x = 11;

3x + x = 11 + 5;

x(3 + 1) = 16;

4x = 16;

x = 16 : 4;

x = 4.