X-y=5 3x+2y=15 porfabor ayudenme
1 answer:
Answer:
<u>The value of x is 5 & y is 0.</u>
Step-by-step explanation:
x - y = 5
x = 5 + y -----------> (1)
3x + 2y = 15
By substituting the value of 'x' from (1)
3 (5 + y) + 2y = 15
15 + 3y + 2y = 15
3y + 2y = 15 - 15
5y = 0
y = 0/5
<u>y = 0</u>
So, in (1)
x = 5 + y
x = 5 + (0)
<u>x = 5</u>
<u>•°• The value of x is 5 & y is 0.</u>
Method used:
- Substitution method.
<u>__________________</u>
Hope it helps!
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Solving the system we get, x= -1, y= -2 and z= 0
Step-by-step explanation:
Solving the equations to find x, y and z
Adding eq(1) and eq(2)
Adding eq(2) and eq(3)
Multiplying eq(4) by 3 and eq(5) by 2
So, value of z =0
Putting value of z in eq(4)
So, value of x = -1
Now putting value of z=0 and x =-1 in equation 1
So, value of y = -2
So, solving the system we get, x= -1, y= -2 and z= 0
Keywords: Solve the system
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