Question

If x - 12y = -210 and x - 6y = 90, then x =

Answer 1

Answer:

x = 210

y = 70/6

Step-by-step explanation:

x - 12y = -210 ----------(1)

x -  6y = 90 --------(2)

x = 90 + 6y

x in (1)

90 + 6y - 12y = -210

12y - 6y = 210 - 90

6y = 70

y = 70/6

now y in x

x = 90 + 6*70/6

  = 90+70

x  = 210