Question

3x + 4y = 7 &
x-y = -2 how to find x and y in different ways
​

Answer 1

Answer:

x=-1/7

y=13/7

Step-by-step explanation:

3x+4y=7--------> eqn1

x-y=-2-----------> eqn2

multiplying eqn2 by 4

4x-4y=-8-------> eqn3

adding eqn1 and eqn3

7x=-1

x=-1/7

substituting the value of x in eqn2

-1/7-y=-2

-1/7+2=y

13/7=y

Answer 2

Answer:

Since you've asked me the ways, here are some ways in which you can solve the problem :

• Equating the coefficients

• Cramer's rule

• Substitution method

• Graphical representation

I've solved it for you by using the Equating coefficients method.

Hope this helps you :)