Question

Tìm X:    7,75 - (0,5 x X : 5 - 6,2) = 5

Answer 1

7.75 - (0.5 * x : 5 - 6.2) = 5

0.5x : 5 - 6.2 = 2.75

0.5x : 5 = 8.95

0.5x = 44.75 

x = 89.5

Answer 2

7,75 - (0,5 x X : 5 - 6,2) = 5

0,5x X:5-6,2=7,75-5

0,5x X:5-6,2=2,75

X:5-6,2=2,75:0,5=5,5

5-6,2=X:5,5

1,2=X:5,5

X=5,5x1,2

X=6,6

Answer 3

\(7,75-\left(0,5\times\frac{x}{5}-6,2\right)=5\)

\(\Rightarrow0,5\times\frac{x}{5}-6,2=2,75\)

\(\Rightarrow\frac{0,5x}{5}=8,95\)

\(\Rightarrow0,5x=44,75\)

\(\Rightarrow x=44,75:0,5\)

\(\Rightarrow x=89,5\)