solve with substitution

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i need help with these problems (either a solution or how to plug them into a graphing calculator):1) Solve by substitution or

Top answer: 1. add the 2nd and 3rd ----> 3/x + 4/y = 5 (#4) double the 2nd and add to the 1st ---> 8/x + 7/y = 6 Read more.
Can someone please help solve this?Solve by using addition or substitution or addition. 10x+2y=7 y=-5x+3 the answer my got was

Top answer: To solve the given system of equations: 1. Start with the two equations: 10x + 2y = 7 ---(1) y = -5x Read more.
17) solve this linear system using the method of substitution.2y-x=-10 y= -3/2x-1 20) simplify then solve by substitution

Top answer: 2(x-4)+y=6 3x-2(y-3)=13 2 x - 8 + y = 6 3 x - 2 y + 6 = 13 2 x + y = 14 3 x -2y = 7 y = 14 - 2x use Read more.
I need help learning to solve substitution.I have a problem that says solve the system by substitution -4.5x-2y=-12.5

Top answer: Look over your equations and see if any contain a single x or y, that makes it easier. in your case, Read more.
solve each system of equations by substitution.y=3x-9 please help explain how to solve this using substitution.

Top answer: A single equation is not a system of equations. Read more.
Solve the integral of (x*e^2x)/(1+2x)^2 by first using u substitution and then use integration by parts.I am very confused on

Top answer: Sorry about that, it just says to solve it and the problem didn't say that you need u sub for it. Read more.
Solve the system of equations by SUBSTITUTION.6y+5x=8 x+3y=−7 (1 point) What would your equation look like after the first

Top answer: From the second equation, we can express x in terms of y by subtracting 3y from both sides: x = -7 - Read more.
Solve: 3x-2y=10 2x+3y=-2Graph: Substitution: Elimination: Show Your work! (I can'tfigure out how to graph it and when i used

Top answer: 3x-2y=10 2x+3y=-2 By substitution 3x - 2y = 10 2x + 3y = -2 3x = 10 + 2y x = 10/3 + 2/3 y 2(10/3 + Read more.
Hello! I need help with these math questions, thanks! :)1.) Solve the system by substitution. 5x + 2y = -17 x = 3y 2.) Solve the

Top answer: 5x + 2y = -17 x = 3y 5(3y) + 2y = -17 15y + 2y = -17 17y = -17 y = -1 x = 3(-1) x = -3 (-3, -1) 2.) Read more.
Solve this system using the substitution method.a – 4b = 2 5a = 3b – 7 Solve using the substitution method and be sure to

Top answer: Write a - 4b = 2 as a = 4b+2, thus: 5a = 3b - 7 5(4b + 2) = 3b - 7 20b + 10 = 3b - 7 17b + 10 = -7 Read more.