Question

Solve the following by substitution method 3x+4y=-1
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Answer 1

Answer:

$xy = 6$

Step-by-step explanation:

$3x + 4y = - 1$

$7xy = - 1$

$xy = 7 - 1$

$xy = 6$

Answer 2

Answer:

3x+4y=-1

or 3x=-1-4y

or x = (-1-4y)/3

So -1-4y is divisible by 3.

-1-4y                         x                            y

3                               3                             -1

-3                             -3                            -1/2

So when x is 3. Then,

-1-4y=3

or -4y=4

or -y=-1

or y=1.

There are infinite solutions like these. This is only one. We need the second equation to solve with one value

Step-by-step explanation: