How to solve this problem using substitution method show solution plz ?

Question

y=2x-13

-4x-7+9y

plz help show solution plz and use substitution method

Answer 1

where is the equals sign in the second equation?

WHERE IS IT??!!

Answer 2

I am not sure if your second equation is right.  Usually it would have an equal sign.

Anyways,

Plug in the first equation of y into the second equation:

-4x - 7 + 9(2x - 13)  now simplify

-4x - 7 + 18x - 117

14x - 124

Answer 3

(1) y=2x-13

(2) -4x-7=9y

subtitute (1) into (2)

-4x-7=9(2x-13)

-4x-7 = 18x - 117

110 = 22x

x = 5

(1) y=2x-13

so... y = (2x5) - 13

          = 15 - 13

          = 2

Answer 4

The second equation doesn't have an equals sign.  Here's how to solve it as written:

y=2x-13, so put (2x-13) in for y in the second expression

-4x-7+9*(2x-13)

Distribute the 9

-4x-7+18x-117

Combine the x's

14x-7-117

combine the numbers

14x-124

If the second expression is supposed to be -4x-7=9y, here is the solution

-4x-7=9*(2x-13)

-4x-7=18x-117

110-4x=18x

110=22x

x=110/22=5

y=2x-13=2*5-13=10-13=-3

x=5, y=-3

_/