MYTUTOR SUBJECT ANSWERS

333 views

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

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

-7x-15x-10=34

-22x=44

x=-2

subsitute x into 1))

y=-3(-2) -2

y=4

Therefore, x=-2, y=4

Shaan J. A Level Maths tutor, GCSE Maths tutor

10 months ago

Answered by Shaan, who has applied to tutor GCSE Maths with MyTutor


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

454 SUBJECT SPECIALISTS

£18 /hr

Aashish M.

Degree: Mechanical Engineering (Masters) - Bath University

Subjects offered: Maths, Physics+ 2 more

Maths
Physics
Further Mathematics
Economics

“I am a Mechanical Engineering student, currently studying at the University of Bath. I enjoy doing Maths and Science, so if you're struggling with a problem, I would be happy to help! During the session, I'll go through the content wit...”

MyTutor guarantee

£18 /hr

Silje I.

Degree: Economics (Masters) - Warwick University

Subjects offered: Maths, Economics

Maths
Economics

“Hi! My name is Silje Indrebo and I am currently completing a Master's degree in economics at University of Warwick. Before coming to Warwick I graduated with a Bachelor's degree in economics from UC Berkeley. Interests: I have alway...”

£20 /hr

Will W.

Degree: Mathematics (Bachelors) - Durham University

Subjects offered: Maths, Physics+ 2 more

Maths
Physics
Further Mathematics
.STEP.

“About Me: I am a Maths and Physics student at Durham University, who has always enjoyed understanding complex concepts in these subjects. I also have a passion for sharing this enjoyment. At my previous school, I ran a Maths Club. Thi...”

About the author

£18 /hr

Shaan J.

Degree: MORSE (Bachelors) - Warwick University

Subjects offered: Maths

Maths

“Top tutor from the renowned Russell university group, ready to help you improve your grades.”

MyTutor guarantee

You may also like...

Other GCSE Maths questions

What is completing the square and how do you do it?

If I buy a dress at 30% off the original price and I pay £40. How much was the dress originally?

Solve the simultaneous equations y = 2x-3 and x^2 +y^2 = 2

The number of uniform spherical shots that can be made from a given mass of lead varies inversely to the cube of the radius. When the radius is 1mm the number of shots made is 2744. How many shots of radius 1.4mm can be made from the same mass.

View GCSE Maths tutors

Cookies:

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

mtw:mercury1:status:ok