Solve the simultaneous equations: 3x + y = -4 and 3x - 4y = 6

First subtract the first equation from the second getting:0 - 5y = 10-5y = 10Then divide both sides by (-5)y = -2Then substitute the y value of (-2) back into the first equation giving:3x + (-2) = -43x = -2x = -2/3And then check by substituting both values into the other equation that you were given.3(-2/3) -4(-2) = -2 +8=6There for the answer is, x=-2/3 and y=-2

LC
Answered by Luke C. Maths tutor

5812 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Solve 7(k – 3) = 3k – 5


Solve the quadratic equation 3x^2 + x – 5 = 0 give answers to 3 decimal places


Find the nth term of the sequence 7,11,15,19...


A right-angled triangle has two smaller sides of length 5cm and 12cm. What is the length of the hypotenuse?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning