Mathematics
Mathematics, 04.05.2020 23:58, Neishab932

Tobin is solving the equation 3(x - 1.25) = 11.25. His work is shown below.
3(x - 1.25) = 11.25
3x - 3.75 = 11.25
3x - 3.75 + 3.75 = 11.25 + 3.75
3x = 15
3x • 3 = 45.3
x = 135
What mistake did Tobin make?

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Tobin is solving the equation 3(x - 1.25) = 11.25. His work is shown below.
3(x - 1.25) = 11.2...

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