1)√(p+q)=√(76-12)=√64=8
2)√(5a-6)=√(5×3-6)=√(15-6)=√9=3
|5x + 3| = |3 - x|
5x + 3 = 3 - x или 5x + 3 = - (3 - x)
5x + x = 3 - 3 5x + 3 = - 3 + x
6x = 0 5x - x = - 3 - 3
x₁ = 0 4x = - 6
x₂ = - 1,5
Вооот и наш ответ ааааааа
-80/x-12=4
-80/x=4+12
x=-80/16=-5