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Mathematics, 06.11.2020 20:10 bigchungus69

Tobin is solving the equation 3 (x minus 1.25) = 11.25. His work is shown below. 3 (x minus 1.25) = 11.25. 3 x minus 3.75 = 11.25. 3 x minus 3.75 + 3.75 = 11.25 + 3.75. 3 x = 15. 3 x times 3 = 45 times 3. x = 135.

What mistake did Tobin make?
Tobin did not distribute the 3 correctly.
Tobin should have subtracted 3.75 from each side.
Tobin should have divided by 3.
Tobin did not make a mistake.

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

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