human
Solve two-step linear equations, with the variable on one side, with all positive integers Tom and Katie are arguing about a first step to solve this equation:
\(
4(m-1)=20
\)
Tom says you can write: \( 4 m=21 \)
Katie says you can write: \( m-1=5 \)
Who is correct? Both Tom and Katie
gpt
Only multiplies the first term in the expansion of a bracket