Proof: Subtract Equation 2

Let's prove the following theorem:

if a + b = c, then b = c - a

Proof:

View as a tree | View dependent proofs | Try proving it

Given
1 a + b = c
Proof Table
# Claim Reason
1 b = c + (a ⋅ (-1)) if a + b = c, then b = c + (a ⋅ (-1))
2 c - a = c + (a ⋅ (-1)) c - a = c + (a ⋅ (-1))
3 b = c - a if b = c + (a ⋅ (-1)) and c - a = c + (a ⋅ (-1)), then b = c - a

Comments

Please log in to add comments