SOLUTION: Use the elimination method. What is the solution to the linear system 15x + 5y=185 and -4x+5y=-5

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Question 461843: Use the elimination method. What is the solution to the linear system 15x + 5y=185 and -4x+5y=-5
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

15x+%2B+5y=185......1
-4x%2B5y=-5 .........2....subtract from 1
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15x+%2B+5y=185......1
-
-4x%2B5y=-5 .........2
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15x-%28-4x%29%2B+5y-+5y=185-%28-5%29
15x-%28-4x%29%2B+cross%285y%29-+cross%285y%29=185-%28-5%29
15x%2B4x+=185%2B5
19x+=190
x+=190%2F19
x+=10
now find y
15x+%2B+5y=185......1

15%2A10+%2B+5y=185
150+%2B+5y=185
+5y=185-150
+5y=35
+y=35%2F5
+y=7
check:

15x+%2B+5y=185......1
15%2A10+%2B+5%2A7=185
150+%2B+35=185
185=185
-4x%2B5y=-5 .........2
-4%2A10%2B5%2A7=-5
-40%2B35=-5
-5=-5