Sam was asked to evaluate the expression 5x+3x+20 for X = 100. Sam's work shown below. Sam's work: 5x+3x+20 = 100 8x+20 = 100 8x = 80 X = 10 What mistakes did Sam make? Help Sam to answer the question correctly.
Question
Answer:
Sam had to substitute 100 instead of X5x+3x+20 =
8x + 20 =
8*100 + 20 =
800 + 20 =
820 ← answer
solved
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10 months ago
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