Question

-×+3y =8.
solve fast please​

Answer 1

Step-by-step explanation:

Step 1) Solve the first equation for

x

:

x

+

3

y

=

8

x

+

3

y

−

3

y

=

8

−

3

y

x

+

0

=

8

−

3

y

x

=

8

−

3

y

Step 2) Substitute

8

−

3

y

for

x

in the second equation and solve for

y

:

2

x

−

y

=

9

becomes:

2

(

8

−

3

y

)

−

y

=

9

(

2

⋅

8

)

−

(

2

⋅

3

y

)

−

y

=

9

16

−

6

y

−

y

=

9

16

−

6

y

−

1

y

=

9

16

−

7

y

=

9

−

16

+

16

−

7

y

=

−

16

+

9

0

−

7

y

=

−

7

−

7

y

=

−

7

−

7

y

−

7

=

−

7

−

7

−

7

y

−

7

=

1

y

=

1

Step 3) Substitute

1

for

y

in the solution to the first equation at the end of Step 1 and calculate

x

:

x

=

8

−

3

y

becomes:

x

=

8

−

(

3

⋅

1

)

x

=

8

−

3

x

=

5

The solution is:

x

=

5

and

y

=

1

or

(

5

,

1

)

Answer 2

$\huge{\tt{\red{}\red{A}\purple{n}\pink{s}\blue{}\orange{w}\green{e}\gray {r}\red{}}}$

Exact Form:

$\huge \rm \: y = \frac{8}{3}$

Decimal Form:

y=2.¯6

Mixed Number Form:

$\huge \rm \: y = 2 \frac{2}{3}$