Math

QuestionIdentify and fix the mistake in solving the equation: m3=4-\frac{m}{3}=-4 leading to m=12m=-12.

Studdy Solution

STEP 1

Assumptions1. The original equation is m3=4-\frac{m}{3}=-4 . The multiplication operation in the second step is intended to isolate the variable mm on one side of the equation.

STEP 2

The error in the solution lies in the second step. The multiplication operation is not applied correctly. When multiplying both sides of the equation by, the correct operation should be to multiply with m-\frac{m}{}, not m-\frac{m}{} with.

STEP 3

Let's correct the error. The correct operation should be3(m3)=3()3 \cdot \left(-\frac{m}{3}\right) =3 \cdot (-)

STEP 4

implify the left side of the equation by multiplying3 with m3-\frac{m}{3}.
m=3(4)-m =3 \cdot (-4)

STEP 5

implify the right side of the equation by multiplying3 with -4.
m=12-m = -12

STEP 6

The solution m=12m=-12 is incorrect because the sign of mm is negative in the equation m=12-m = -12. To get the correct value of mm, we need to multiply both sides of the equation by -1.
1(m)=1(12)-1 \cdot (-m) = -1 \cdot (-12)

STEP 7

implify both sides of the equation.
m=12m =12So, the correct solution to the equation m3=4-\frac{m}{3}=-4 is m=12m =12.

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