Saturday

January 31, 2015

January 31, 2015

Posted by **Sam** on Tuesday, October 12, 2010 at 7:56pm.

3x+5y=21

x=51-9y

- substitution -
**naomi**, Tuesday, October 12, 2010 at 8:13pmsubstitute x in the eq 3x+5y=21

3(51-9y)+5y=21

153-27y+5y=21

153-22y=21

-22y=21-153

-22y=-132

-22y/-22=-153/-22

y=6

**Answer this Question**

**Related Questions**

Substitution Method-Plz help - Use the Substitution method to solve the system ...

substitution method - Solve by substitution method please help me solve this. I ...

Algebra 1 - bobpursey, In this problem you helped me with earlier: Solve using ...

Linear Equations - Can you please help solve this equation using the ...

math substitution method - use the substitution method to solve 7x+5y=-26 x=28-...

Substitution Method - Use the Substitution method to solve the system of ...

Algerbra 1 substitution method - im really confused about this question: 2x-3y=...

algebra - use the Substitution Method. Please give it a try. y = 3x + 4 5x + 3y...

substitution - solve by the substitution method 3x+5y=21 x=51-9y

substitution method - solve using the substitution method 8x+6y=8 -9x+y=22 The ...