Question

20-5r=20-5r

Answer 1

subtract 20 from both sides
-5r = -5r
0 = 0

so whats the solution of this equation?

Answer 2

A=1 B=5 C= no solution D= all real numbers

Answer 3

Both sides are equal so they will be cancelled
0=0

Answer 4

D

Answer 5

Exactly, D!

Answer 6

Since 0 is a real number so D is the answer

Answer 7

thanks guys! heres another one: 8x-4(-5x-2) = 12x

Answer 8

\[= 8x +20x + 8 = 12x\]
\[28x - 12x = -8\]

Now, solve for x..

Answer 9

8x-4(-5x-2)=12x
8x+20x+8=x12x
8=12x-8x+20x
8=4x+20x
8=24x
8/24=x
x=1/3