Solve the simultaneous equation: 3x+y=-2, -7x+5y=34.

  • Google+ icon
  • LinkedIn icon

3x+y=-2        ...1)

-7x+5y=34     ...2)

Using the substitution method:

Rearrange equation 1):

y=-3x-2       ...1))

substitute equation 1)) into eqaution 2)

-7x +5(-3x-2)=34




subsitute x into 1))

y=-3(-2) -2


Therefore, x=-2, y=4

Shaan J. A Level Maths tutor, GCSE Maths tutor

About the author

is an online GCSE Maths tutor who has applied to tutor with MyTutor studying at Warwick University

Still stuck? Get one-to-one help from a personally interviewed subject specialist.

95% of our customers rate us

Browse tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss