Please can you guys tell me what this question

Use the elimination method to solve the system of equations -x+5y=-4 and 4x+3y=16

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?