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Algebra Need To Know An Answer For 42-9=43, Can You Help?
42 - 9 = 49 is a false subtraction sentence.
If you mean 42 - g = 43, you can subtract 42 from both sides of the equation to get
(42 - g) - 42 = (43) - 42
0 - g = 1
Now you can multiply by -1 on both sides
(-1)(-g) = (-1)(1)
g = -1
Check
42 - (-1) = 43
42 + 1 = 43 (yes)
If you mean 42 - g = 43, you can subtract 42 from both sides of the equation to get
(42 - g) - 42 = (43) - 42
0 - g = 1
Now you can multiply by -1 on both sides
(-1)(-g) = (-1)(1)
g = -1
Check
42 - (-1) = 43
42 + 1 = 43 (yes)
