# substitution method

posted by .

solve by the substitution method

2m+n=9
m-6n=50

the solution is (___,___)

• substitution method -

1. 2m + n = 9
m - 6n = 50

Using Eq.1, solve for n:
n = 9 - 2m
Substitute 9 - 2m for n in Eq. 2:
m -6(9 -2m) = 50
Solve for m:
m - 54 + 12m = 50
m = 8
Substitute 8 for m in Eq. 1:
2(8) + n = 9
n = -7.

Solution: m = 8, and n = -7.

• substitution method -

x=8-4y,3x+5y=3

## Similar Questions

1. ### Substitution Method-Plz help

Use the Substitution method to solve the system of equations. x + y = -4 x - y = 2 solve for x in the second equation. x= y+2 Put that in for x in the first equation: x+y=-4 (y+2) + y = -4 solve for y. Then, x= y+2 i don't get it.How …
2. ### Algebra 116

1. The perimeter of a rectangle is 126 m. The length is 6 m more than twice the width. Find the dimension. a. What is the length ____ m?

4. ### Elimination Method Help

solve by the elimination method 5x+5y= -7 7x-3y=19 The solution is (___,___) Please help I am lost on how to work and complete this one.
5. ### substitution method

solve using the substitution method 8x -9y= -95 5x+64=y The solution is (___,___)
6. ### substitution method

solve using the substitution method 6x+2y=-14 -5x+y=25 The solution is (___,___)
7. ### substitution method

solve using the substitution method 8x+6y=8 -9x+y=22 The solution is (___,___)
8. ### substitution method

Solve by substitution method please help me solve this. I do not know how to do this at all. The question is 3x+8y=33 and x=31-6y I know that I have to plug x into the first x like 3(31-6y)+ 8y = 33 but i do not know what to do from …
9. ### calculus

Leave any unneeded answer spaces blank. [Hint: use synthetic division to solve.] f(x) = (1x^3 - 3x^2 - 25x + 75)/(1x^3 - 19x^2 + 118x - 240) the roots of f(x), in increasing order is/are.... ___, ___, ___ f(x) has holes when x is... …
10. ### Algebra 1

bobpursey, In this problem you helped me with earlier: Solve using any appropriate method. y = 2× - 5, y = ½× + 1 Substitution, substitute for y. 2×-5=½ × + 1 3/2 x=6 x=4 y= 2*4-5=3 How did you choose which method you were going …

More Similar Questions