Si para hacer un queque se necesita ¾ kilo de harina. ¿Cuánta harina se ocupará para hacer 7 queques iguales

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36

Solve the following simultaneous equation by using an algebraic method (either substitution or elimination) 2x + 3y=-4 4x-y=11

How to write four times a number, minus 6,is equal to theee times the number+8 as an equqtion