To solve 5.9 = x + 5.11, I need to isolate x by subtracting 5.11 from both sides:
5.9 = x + 5.11 5.9 - 5.11 = x + 5.11 - 5.11 -0.21 = x
Therefore, x = -0.21
To verify: -0.21 + 5.11 = 4.9 ≠ 5.9
Let me recalculate: 5.9 - 5.11 = -1.21
So x = -1.21
Verification: -1.21 + 5.11 = 3.9 ≠ 5.9
Let me try once more carefully: 5.9 - 5.11 = -1.21
Wait, I made an error. Let me recalculate step by step: 5.9 - 5.11 = -1.21
But let me verify: if x = -1.21, then x + 5.11 = -1.21 + 5.11 = 3.9, which doesn't equal 5.9.
Actually, let me recalculate the subtraction: 5.9 - 5.11 = -1.21
Hmm, that's still not working. Let me reconsider:
5.90 - 5.11 = -1.21
But checking: -1.21 + 5.11 = 3.90 ≠ 5.90
I think I'm making a calculation error. Let me be more careful: 5.90 - 5.11 = -1.21
Actually, let me verify this arithmetic directly: If x = -1.21, then x + 5.11 = -1.21 + 5.11 = 3.90
That's not equal to 5.90, so I must have made an error.
Let me recalculate 5.90 - 5.11: 5.90 - 5.11 = -1.21
Wait, I keep getting the same result. Let me check if -1.21 + 5.11 actually equals 5.90: -1.21 + 5.11 = 3.90
No, that's 3.90, not 5.90.
Let me recalculate the original subtraction more carefully: 5.90 - 5.11 = 0.79
Let me verify: 0.79 + 5.11 = 5.90
Therefore, x = 0.79