Solve the system of equations.
- 5x + 2y = 9
Y = 78
=
2 answers:
Answer:
x = 147/5 and y = 78
Step-by-step explanation:
First solve by substitution and put 78 into y in -5x + 2y = 9 so you get 147/5
then plug 147/5 into x and find y
Answer:
x = -147/5 , y = 78
Step-by-step explanation:
- 5x + 2y = 9
Y = 78
Substitute the second equation into the first
-5x + 2(78) = 9
-5x +156 = 9
Subtract 156 from each side
-5x+156-156 = 9-156
-5x =147
Divide each side by -5
-5x/-5 =147/-5
x = -147/5
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