Basic Math Examples

$20 z - 19 z + 4 = 5$

Step 1

Subtract $19 z$ from $20 z$ .

$z + 4 = 5$

Step 2

Move all terms not containing $z$ to the right side of the equation.

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Step 2.1

Subtract $4$ from both sides of the equation.

$z = 5 - 4$

Step 2.2

Subtract $4$ from $5$ .

$z = 1$