Solve each of the following for x:
a. x+2=5
b. x²+2x=5x
c. x(5x−20)+2(5x−20)=5(5x−20)

a.) x = 3

b.) x = 0, 3

c.) x = 4, 3

Step-by-step explanation:

a.)

x + 2 = 5

  - 2    -2

x = 3

For b and c: Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

it is x equals 3   plese mark me really need it

step-by-step explanation:

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,