Why is 3+-5 equal to -2?

Step-by-step explanation:

Why 3+-5=-2

Positive(+) multiply negative(-)=negative

Therefore it will be

+3-5

+3 means I have $3

-5 means I am owing $5

I then pay my $3,but am still owing $2,since am owing $2,the $2 would be writing as -2

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point

it would take 7/10 of an hour too fill the pool.

step-by-step explanation: