Question

решите уравнение: x+1.2x+1.8x+1.5x=2.75

Answer 1

5,5x=2,75
x=2,75:5,5
x=0,5

Answer 2

x+1.2x+1.8x+1.5x=2.75
1) 5,5x = 2.75
2) x = $frac{2.75}{5.5}$
3) x = 0.5