4x-y=14 x-y=12 whats the answer of this equation? with solution pls
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4x-y=14 x-y=12 whats the answer of this equation? with solution pls
4x-y=14 x-y=12 whats the answer of this equation? with solution pls
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Verified answer
Answer:
x = 2/3
y = -34/3
Step-by-step explanation:
Use the elimination method
4x - y = 14
(x - y = 12)-1
_________
4x - y = 14
-x + y = -12
_________
3x = 2
3/3x = 2/3
x = 2/3
Then substitute the value of x to one of the equations
x - y = 12
(2/3) - y = 12
(2/3) - 12 = y
(2 - 36)/3 = y
y = -34/3
CHECKING:
4x - y = 14
4(2/3) - (-34/3) = 14
8/3 + 34/3 = 14
42/3 = 14
14 = 14 TRUE
Verified answer
Step-by-step explanation:
By ellimination,
(subtract to elliminate y)
4x-y=14
(-) x-y=12
--------------
3x=2
x=2/3
Now by substitution,
x-y=12
2/3 - y=12
-y= 12 - 2/3
y= - 34/3
Checking:
4x-y=14
4(2/3) - (-34/3)=14
(8/3)+(34/3)=14
42/3=14
14=14