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Mathematics
11 May, 08:36
Solve (-8x-12) + (9x+4) =
+1
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Jadon
11 May, 08:44
0
Simplifying
8x + - 12 = 9x + - 4 + x
Reorder the terms:
-12 + 8x = 9x + - 4 + x
Reorder the terms:
-12 + 8x = - 4 + 9x + x
Combine like terms: 9x + x = 10x
-12 + 8x = - 4 + 10x
Solving
-12 + 8x = - 4 + 10x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-10x' to each side of the equation.
-12 + 8x + - 10x = - 4 + 10x + - 10x
Combine like terms: 8x + - 10x = - 2x
-12 + - 2x = - 4 + 10x + - 10x
Combine like terms: 10x + - 10x = 0
-12 + - 2x = - 4 + 0
-12 + - 2x = - 4
Add '12' to each side of the equation.
-12 + 12 + - 2x = - 4 + 12
Combine like terms: - 12 + 12 = 0
0 + - 2x = - 4 + 12
-2x = - 4 + 12
Combine like terms: - 4 + 12 = 8
-2x = 8
Divide each side by '-2'.
x = - 4
Simplifying
x = - 4
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Marlene Hebert
11 May, 08:45
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We need to add like terms, meaning add the x's together and add the regular numbers together.
So if we add the x's together, - 8x+9x = 1x.
Then when we add the numbers together, - 12+4 = - 8.
Combine our two sums and we get x-8 as the final answer.
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