Question

\(Tìm\) \(x\),\(biết:\) 

\(24,5+x\) * \(5\) \(=100\)

 

\(x\) * \(3-76,3=152\) 

Answer 1

`24,5 + x xx 5 = 100`

`=> x xx 5 = 100 - 24,5`

`=> x xx 5 = 75,5`

`=> x = 75,5 : 5`

`=> x = 15,1`

__

`x xx 3 - 76,3 = 152`

`=>` \(x×3=15,2+76,3\)

`=>` \(x×3=91,5\)

`=>` \(x=91,5:3\)

`=> x = 30,5`

Answer 2

Lời giải:
$24,5+x\times 5=100$

$x\times 5=100-24,5=75,5$

$x=75,5:5=15,1$
------------

$x\times 3-76,3=152$

$x\times 3=152+76,3$

$x\times 3=228,3$

$x=228,3:3=76,1$

Answer 3

x  

X x 5 = 24,5 + 100

X x 5 = 124,5

      X = 124,5 : 5

      X = 24,9

X x

Answer 4

\(24,5+x\cdot5=100\\ x\cdot5=100-24,5\\ x\cdot5=75,5\\ x=75,5:5\\ x=15,1\)

 

\(x\cdot3-76,3=152\\ x\cdot3=152+76,3\\ x\cdot3=228,3\\ x=228,3:3\\ x=76,1\)