9th grade
posted by ashtyn .
what is the value of x in the system? 5x3y=23 3x+5y=7

9th grade 
Math?
5x3y=23...............equation (1)
3x+5y=7.................equation (2)
Eq. (1) x 5: 25x15y=115......Equation (3)
Eq. (2) x 3: 9x + 15y=21........Equation (4)
Eq (3)+Eq. (4): 34x = 136 (eliminating y)
Therefore, x = 4
Respond to this Question
Similar Questions

9th grade classes
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? 
9th Grade Courses
For 9th grade science, which would be easier to take? 
9th grade
What is the value of c in the equation f(c)=0 with the funtion f(x)=9/5c +32 
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? 
9th grade geometry
if RS=8y+4, ,,ST=4y+8 and RT=15y9 find the value of y 
9th grade
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. … 
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 
9th grade algebra
Find the value of x so that F(x)=23 I can't figure this out? 
math
Riding on a school bus are 20 students in 9th grade, 10 in 10th grade, 9 in 11th grade, and 7 in 12th grade. Approximately what percentage of the students on the bus are in 9th grade? 
Algebra 1
Please, I am very confused in the Systems of Equations and Inequalities Unit Test that is only 27 questions. The test starts with: 1.Which graph represents the solution to the given system?