SOLUTION: Solve the linear system by using substitution method in -5x+3y=51 and y=10x-8
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Question 557195: Solve the linear system by using substitution method in -5x+3y=51 and y=10x-8
Answer by kennyxx12(3) (Show Source): You can put this solution on YOUR website!
ok one is already isolated for y
y=10x-8
substitude it y=10x-8 this equals to y
now plug it in
-5x+3y=51(original formulae)
-5x+3(10x-8)=51(after substitution)
-5x+30x-24=51
25x-24=51
ADD 24 TO BOTH SIDES
25X=75
DIVIDE
X=3
NOW SUBSTITUTE X ON THE OTHER FORMULAE
Y=10(3)-8
Y=30-8
Y=22
X=3
ANSWER (3,22)
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