Blank +(3 + 9) = (5 + 3) + 9

I need that number for blank

1 answer

To solve the equation \( \text{Blank} + (3 + 9) = (5 + 3) + 9 \), we first simplify both sides.

  1. Calculate \( 3 + 9 \): \[ 3 + 9 = 12 \]

  2. Calculate \( 5 + 3 \): \[ 5 + 3 = 8 \]

Now the equation looks like this: \[ \text{Blank} + 12 = 8 + 9 \]

  1. Calculate \( 8 + 9 \): \[ 8 + 9 = 17 \]

Now the equation is: \[ \text{Blank} + 12 = 17 \]

To find "Blank", we subtract 12 from both sides: \[ \text{Blank} = 17 - 12 \] \[ \text{Blank} = 5 \]

Thus, the value for blank is \( 5 \).