5x + 2y = 7....multiply by -1
-2x + 2y = -14
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-5x - 2y = -7 (result of multiplying by -1)
-2x + 2y = -14
---------------add
-7x = - 21
x = -21/-7
x = 3
5x + 2y = 7
5(3) + 2y = 7
15 + 2y = 7
2y = 7 - 15
2y = - 8
y = -8/2
y = -4
solution is (3,-4)
Answer: -3,1
Step-by-step explanation:
Answer:
-5
Step-by-step explanation:
i need points but I'm pretty sure this is right
9-2n=14 - 2n
Move -2n to the left side. Sign changes from -2n to +2n.
9-2n+2n= 14-2n+2n
9= 14-2n+2n
9= 14
Answer: no solution
