Solve 250*4.2*20=m*2.1*20+(m-50)*336

$$250 \times 4.2 \times 20 = m \times 2.1 \times 20 + ( m - 50 ) \times 336$$

Solve for m

$$m=100$$

Steps for Solving Linear Equation

Multiply 250 and 4.2 to get 1050.

$$1050\times 20=m\times 2.1\times 20+\left(m-50\right)\times 336$$

Multiply 1050 and 20 to get 21000.

$$21000=m\times 2.1\times 20+\left(m-50\right)\times 336$$

Multiply 2.1 and 20 to get 42.

$$21000=m\times 42+\left(m-50\right)\times 336$$

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

$$21000=m\times 42+336m-16800$$

Combine m\times 42 and 336m to get 378m.

$$21000=378m-16800$$

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

$$378m-16800=21000$$

Add 16800 to both sides.

$$378m=21000+16800$$

Add 21000 and 16800 to get 37800.

$$378m=37800$$

Divide both sides by 378.

$$m=\frac{37800}{378}$$

Divide 37800 by 378 to get 100.

$$m=100$$