Solve 250*42*20=m*21*20+(m-50)*336

$$250 \times 42 \times 20 = m \times 21 \times 20 + ( m - 50 ) \times 336$$

Solve for m

$$m=300$$

Steps for Solving Linear Equation

Multiply 250 and 42 to get 10500.

$$10500\times 20=m\times 21\times 20+\left(m-50\right)\times 336$$

Multiply 10500 and 20 to get 210000.

$$210000=m\times 21\times 20+\left(m-50\right)\times 336$$

Multiply 21 and 20 to get 420.

$$210000=m\times 420+\left(m-50\right)\times 336$$

Use the distributive property to multiply m-50 by 336.

$$210000=m\times 420+336m-16800$$

Combine m\times 420 and 336m to get 756m.

$$210000=756m-16800$$

Swap sides so that all variable terms are on the left hand side.

$$756m-16800=210000$$

Add 16800 to both sides.

$$756m=210000+16800$$

Add 210000 and 16800 to get 226800.

$$756m=226800$$

Divide both sides by 756.

$$m=\frac{226800}{756}$$

Divide 226800 by 756 to get 300.

$$m=300$$