C-05-Q038mediumsingle_mcq
Which operation is NOT a valid step while solving an equation?
Which operation is NOT a valid step while solving an equation?
- aadd the same value to both sides
- bmultiply both sides by the same nonzero number
- cdivide both sides by zero
- dapply transposition
ব্যাখ্যা
Division by zero is undefined, so it can never be a legitimate step in solving an equation. The other three operations all preserve equality and are standard, valid moves.