-1-3x=2x+1

Solve the linear equation: -1 - 3x = 2x + 1

• Add 3x to both sides: -1 = 5x + 1
• Subtract 1 from both sides: -2 = 5x
• Divide by 5: x = -2/5

Check: LHS = -1 - 3(-2/5) = -1 + 6/5 = 1/5; RHS = 2(-2/5) + 1 = -4/5 + 1 = 1/5. So x = -2/5.