SOLUTION: elimination 4x + 2y = 34 10x- 4y = -5

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Question 934633: elimination
4x + 2y = 34
10x- 4y = -5
Answer by MathLover1(20850) About Me  (Show Source):
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4x+%2B+2y+=+34...eq.1..both sides multiply by 2
10x-+4y+=+-5....eq.2
________________
8x+%2B+4y+=+68...eq.1
10x-+4y+=+-5....eq.2
___________________________add
8x+%2B+4y+%2B10x-+4y=+68-5....eliminate y
8x+%2B+cross%284y%29+%2B10x-+cross%284y%29=+63
18x=+63
x=+63%2F18
x=3.5
go to 10x-+4y+=+-5....eq.2, plug in x value
10%2A3.5-+4y+=+-5
35-+4y+=+-5
35%2B5+=4y
40+=4y
y=10