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Mathematics
, 05.02.2020 04:43
tgreenberg2002
Which method would be the simplest way to solve the system?
7x+5y=19
-7x-2y=-16
a) graphing
b) substitution
c) elimination
d) distributive
Answers: 3
Show answers
Answers
Answer from:
gautemalaismylife
It would be elimination (C) because 7x and -7x can be eliminated into 0.
7x + 5y = 19
-7x - 2y = -16
3y = 3
3 3
y = 1
7x + 5y = 19
7(1) + 5y = 19
7 + 5y = 19
- 7 - 7
5y = 12
5 5
y = 2.4
(x, y) = (1, 2.4)
Answer from:
myleefaustin
elimination method
7x+5y=19
-7x-2y=-16
just add them x is eliminated
3y=3
y=1
7(1)+5y=19
5y=19-7
y=12/5
Answer from: Quest
8(-10x+3.5y-7)
8×-10x + 8×3.5y + 8×-7
-80x + 28y - 56
therefore
-80x+28y-56 is the correct answer
Answer from: Quest
Lie
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You know the right answer?
Which method would be the simplest way to solve the system?
7x+5y=19
-7x-2y=-16
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