Question

3 * x - x = 80 

thế x bằng....

Answer 1

3 * x - x = 80

3 * x - x * 1 = 80

(3 - 1) * x = 80

2 * x = 80

x = 80 : 2

x = 40

Answer 2

3 * x - x = 80

3 * x - x * 1 = 80

(3 - 1) * x = 80

2 * x = 80

x = 80 : 2

x = 40

Answer 3

\(3x-x=80\)

\(=>2x=80\)

\(=>x=80:2\)

\(=>x=40\)

Answer 4

\(3\cdot x-x=80\)

\(\Rightarrow2x=80\)

\(\Rightarrow x=80:2\)

\(\Rightarrow x=40.\)