math
posted by alex .
x+5y= 3
3x2y= 8
sovle using substituion

(1) x + 5y = 3
(2) 3x  2y = 8
substitution method: we first choose one of the equation, and express one of the variables in terms of the other variable,, here let's choose equation (1), and express x in terms of y:
x + 5y = 3
x = 3  5y
now, we substitute this to equation (2), and we solve for y:
3x  2y = 8
3(3  5y)  2y = 8
9  15y 2y = 8
17y = 17
y = 1
substituting this back to either equations to get x (let's choose (1)):
x = 3  5y
x = 3 5(1)
x = 3 + 5
x = 2
hope this helps~ :)
Respond to this Question
Similar Questions

math
sovle the linear equation 8.3=x+6.1 Thank you 
Math
Can someone help me solve the following problems using the substituion method? 
math
how do i sovle this equation. x/5 = 12/15 
Algebra
1,Sovle using the substitution method. Show your work. If the system has no solution or an infinite number of solutions,state this. x  3y = 20 5x + 3y =40 2 Sovle using the elimination method. Show your work. If the system has no … 
Algebra
Sovle using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this 2x + 3y = 37.5 4x + 0y = 24 
Math Help
Sovle w^213w+42=0 I get 6,7 is this correct? 
math
sovle the following equation 8/x1=9/(x)(x+2) i know the answer is 1,7 but how? 
math (algerba 1)
how would you sovle this? multiply: (a + 5) (a  5) 
Algebra
What is the answer to 7x+2y=16 and 21x6y=24 using the substituion method? 
Substituion MATH
1) x+10y=60 4x+16y=32 2) 1/2x  1/4y=3 1/3x+1/6y=2