# Khan/khan-exercises

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 One-step equations with multiplication
randFromArray("x") randRange(2, 10) randRange(2, 10) fractionReduce(D, A) fractionReduce(1, A)

Solve for X:

AX = D

X = D / A

Divide both sides by A:

\red{\dfrac{\color{black}{AX}}{A}} = \red{\dfrac{\color{black}{D}}{A}}

Simplify:

\dfrac{\cancel{A}X}{\cancel{A}} = SOLUTION

X = SOLUTION

Solve for X:

D = AX

X = D / A

Divide both sides by A:

\red{\dfrac{\color{black}{D}}{A}} = \red{\dfrac{\color{black}{AX}}{A}}

Simplify:

SOLUTION = \dfrac{\cancel{A}X}{\cancel{A}}

X = SOLUTION

Solve for X:

\dfrac{X}{A} = D

X = D * A

Multiply both sides by A:

\dfrac{X}{A} \red{\cdot A} = D \red{\cdot A}

Simplify:

\dfrac{X}{\cancel{A}} \cdot \cancel{A} = A * D

X = A * D

Solve for X:

D = \dfrac{X}{A}

X = D * A

Multiply both sides by A:

D \red{\cdot A} = \dfrac{X}{A} \red{\cdot A}

Simplify:

A * D = \dfrac{X}{\cancel{A}} \cdot \cancel{A}

X = A * D