x-6y=90, x = 90+6y
x-12y = -210
90+6y-12y= -210
-6y = -210-90
y = 300/6
y=50
x-6(50) = 90
x = 90+300
x = 390
Answer:
x = 390.
Step-by-step explanation:
Given : x - 12y = -210 and x -6y =90 .
To find : Find x .
Solution : We have given
x - 12y = -210 ----------(1)
x -6y =90 ----------(2)
Subtracting equation 2 from equation 1.
x - 12y = -210
(-)x -(+)6y = (-)90
____________
0 - 6y = -300
On dividing both sides by - 6y.
y = 50.
Plug the value of y = 50 in equation 1.
x - 12 ( 50 ) = -210.
x - 600 = -210
On adding both sides by 600
x = -210 +600.
x = 390.
Therefore, x = 390.
