Solve the system using elimination.

Mathematics
Tutor: None Selected Time limit: 1 Day

Solve the system using elimination.

–10x – 3y = –18
–7x – 8y = 11

a.  (3, –4)

b.  (–7, –10)

c.  (–4, 3)

d.  (2, –1)

Apr 29th, 2015

–10x – 3y = –18)7
–7x – 8y = 11)10

-70x-21y= -126

-70x-80y= 110

59y/59= -236/59

y=-4

–10x – 3y = –18

–10x – 3(-4) = –18

-10x+12=-18

-10x= -30

x=3

the answer is 

a.  (3, –4)

Apr 29th, 2015

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