Question 1008285
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Solve each system by elimination. 

1) 10x - 8y = 16
20x - y = 2 

2) -2x + 5y = 29
-2x + 2y = 20 
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1) 
10x - 8y = 16  (1)
20x - y = 2    (2)

Multiply the equation (1) by 2 (both sides) and then distract it from (2). In this way you eliminate y 
and get one single equation for x:

-y - (-16)y = 2 - 32,

15y = -30,

y = {{{-30/15}}} = -2.

Then find x from (2): 20x = y + 2 = -2 + 2 = 0, x = 0. 



2)
-2x + 5y = 29   (1)
-2x + 2y = 20   (2)

Distract (2) from (1) and do the rest yourself.
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