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Check an Equation Solution
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ParaPro
PPM.089 Check an Equation Solution
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For the equation 11w + 2w - 4 = 2w - 23, a proposed solution is w = -2. Which substitution correctly checks whether w = -2 is a solution?
A
Substitute w = -2: left side 11(-2) + 2(-2) - 4 = -30 and right side 2(-2) - 23 = -26, so w = -2 is not a solution.
B
Substitute w = -1: left side 11(-1) + 2(-1) - 4 = -17 and right side 2(-1) - 23 = -25, so w = -1 is not a solution.
C
Substitute w = -2: left side 11(-2) + 2(-2) - 4 = -30 and right side 2(-2) - 23 = -27, so w = -2 is not a solution.
D
Substitute w = -2: left side 11(-2) + 2(-2) - 4 = -29 and right side 2(-2) - 23 = -27, so w = -2 is a solution.
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