Question

Tìm x:

x+30= 10 x 85 + 85 x 9

Answer 1

x + 30 = 10 x 85 + 85 x 9

x + 30 = 1615

        x  = 1615 - 30

        x  = 1585

Answer 2

x+30=10x85+9×85

x+30=85×(10+9)

x+30=85×19

x+30=1615

x=1615-30

x=1585

Answer 3

x + 30 = 10 x 85 + 85 x 9

x + 30 = ( 10 + 9 ) x 85

x + 30 = 19 x 85

x + 30 = 1615

       x = 1615 - 30

       x = 1585

Answer 4

X + 30 = 10 x 85 + 85 x 9 

X + 30 =  85 x ( 10 + 9 ) 

X + 30 = 1615

X  = 1615 - 30

X = 1585

Answer 5

x+30=10x85+85x9

x+30=85x(10+9)

x+30=85x19

x+30=1615

x      =1615-30

x       =1585

Answer 6

x+30=10x85+85x9

x+30=85x(10+9)

x+30=85x19

x+30=1615

x      =  1915 - 30

x      = 1585
 

Answer 7

\(x+30=10\) x \(85+85\)x   \(9\)

\(x+30=\left(10+9\right)\)x   \(85\)

\(x+30=19\)x    \(85\)

\(x+30=1615\)

\(x\)       \(=1615-30\)

\(x\)         \(=1585\)