posted by ashtyn

what is the value of x in the system? 5x-3y=23 3x+5y=7

1. Math?

5x-3y=23...............equation (1)
3x+5y=7.................equation (2)

Eq. (1) x 5: 25x-15y=115......Equation (3)
Eq. (2) x 3: 9x + 15y=21........Equation (4)
Eq (3)+Eq. (4): 34x = 136 (eliminating y)
Therefore, x = 4

## Similar Questions

I'm choosing which classes I want to take for freshman year but I'm not sure what I need to take. Right now I've only decided on Geometry and English 1. What science do I take for 9th grade?

For 9th grade science, which would be easier to take?

What is the value of c in the equation f(c)=0 with the funtion f(x)=9/5c +32
4. ### 9th Algebra

Im in 9th grade algebra. and we are learning adding and subtracting real numbers. im stumped on a couple of problems. I get confused when i see the absolute value lines. Does that change the munber?

if RS=8y+4, ,,ST=4y+8 and RT=15y-9 find the value of y

I'm doing this word search for my 9th grade honors physical science class, and i don't understand one thing. it says 'blue, striped and round are examples of this' when we're talking about matter and phases of matter and density/mass/weight/volume. …
7. ### 9th grade math (algebra 1)

Fine the solution set of each system of linear equations or inequalities below by graphing. Show all work under the graph of each system. 1. x + y = 3 2x - 2y = 6