Branilest and 30 point please answer
Consider the system of equations.

5x+4y=−22x−4y=6
Which property could be used to write the equation 7x = 4 as the first step to solving the system of equations?

Distributive Property of Equality

Addition Property of Equality

Substitution Property of Equality

Division Property of Equality

Addition Property of Equality

Step-by-step explanation:

System of Equations

When two equations are given and two variables are unknown in both equations, then we can solve the system in several ways.

One method consists in adding both equations term by term and eliminate one of the variables. That property is called the addition of equalities. Let's consider the equations given in the problem:

If we add both equations, we have

Simplifying

By adding both equations we managed to eliminate the variable y and could easily find the value of x

Addition Property of Equality

could you reply to this with the question so i can ?

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere