Answer:
9
Step-by-step explanation:
4x-7+3x=5x+1
7x-7=5x-1
7x=5x+8
2x=8
x=4
4(4)-7=?
16-7=9
A + 2b + 6c = -9
Multiply the equation by 2,
2a + 4b + 12c = -18
In short, Your Answer would be -18
Hope this helps!
Answer:

Step-by-step explanation:
Perimeter of a square:
The perimeter of a square of side x is given by:

Perimeter of a rectangle:
The perimeter of a rectangle of length l and width w is given by:

The length of the sides of a square measure 2x-5.
This means that the perimeter of the square is:

The length of a rectangle measures 2x, and the width measures x + 2.
This means that the perimeter of the rectangle is:

For what value of x is the perimeter of the square the same as the perimeter of the rectangle?
This is x for which:

So





Step-by-step explanation:
distance between (12.-7) and (-3, -7)

=12+3
=15 units