Question

70 - 5 x ( X - 3) = 45

giúp mình X là gì nhé

Answer 1

70 - 5(x - 3) = 45

-5(x - 3) = 45 - 70

-5(x - 3) = -25

x - 3 = (-25) : (-5)

x - 3 = 5

x = 5 + 3

x = 8

Answer 2

Trả lời:

\(70-5\times\left(x-3\right)=45\)

\(\Leftrightarrow5\times\left(x-3\right)=25\)

\(\Leftrightarrow x-3=5\)

\(\Leftrightarrow x=8\)

Vậy \(x=8\)

Answer 3

70 - 5 x ( x - 3 ) = 45

5 x ( x - 3 )        = 25

x - 3                  = 5

x                       = 8

Vậy x = 8

Answer 4

5×(x-3)=70-45

5×(x-3)=25

(x-3)=25:5

(x-3)=5

x=5+3

x=8

vậy x=8

Answer 5

\(70-5\times\left(x-3\right)=45\)

\(5\left(x-3\right)=70-45\)

\(5\left(x-3\right)=25\)

\(x-3=25:5\)

\(x-3=5\)

\(x=5+3=8\)

Học tốt

Answer 6

\(70-5\left(x-3\right)=45\Leftrightarrow70-5x+15=45\)

\(\Leftrightarrow85-5x=45\Leftrightarrow40-5x=0\)

\(\Leftrightarrow5x=40\Leftrightarrow x=8\)