SOLUTION: solve each system using the substitution method.
x-2y=7
3x-21=6y
Algebra.Com
Question 302020: solve each system using the substitution method.
x-2y=7
3x-21=6y
Answer by london maths tutor(243) (Show Source): You can put this solution on YOUR website!
x-2y=7 ... equation 1
3x-21=6y ... equation 2
Let's x = 1
x-2y = 7
1 - 2y = 7
-2y = 7 -1
-2y = 6
y = -3
Put y = -3 and x = 1 into equation 2
3x - 21 = 6y
3x - 6y = 21
3(1) - 6(-3) = 21
3 -(-18) = 21
3 + 18 = 21
21 = 21
Therefore, x = 1 and y = -3
RELATED QUESTIONS
solve each system using the substitution method
x-2y=7... (answered by london maths tutor)
how do you solve each system of simultaneous equations by using the substitution method.
(answered by Fombitz)
Solve the system using the substitution method x+2y=6... (answered by ewatrrr,lynnlo)
Solve te system using the substitution method x+2y=6... (answered by lynnlo)
Solve the system of linear equations using the Substitution Method.
x+2y=3... (answered by haileytucki)
solve each system using the substitution or elimination method
x-2y=6
x+y=3
(answered by Alan3354)
Solve the system of equations by the substitution method.
-6y=x+21
3x+5y=11
Please (answered by stanbon)
Solve each system by using the elimination method and the substitution method.
4x-3y=-19
(answered by checkley77)
(x+2y=1
2x-y=-3) solve each system using the substitution or elimination... (answered by checkley75)