Question

the length of the rectangular room is 4 more than 2 times width. if the perimeter of the room is 200 cm find its dimensions​

Answer 1

Answer:

length : 68  width : 32

Step-by-step explanation:

The equation would be:

(4+2x) + x + (4+2x) + x = 200

then you would collect the x terms as:

2x + 2x + x + x = 6x

then the numbers:

4+4 = 8

so the simplified  equation would be:

6x + 8 = 200

then you would sove the equation as so:

move 8 to the other side to leave the x alone

6x = 200-8   (if you move a number to the other side of the equal sign it changes its sign)

6x = 192

to leave x alone you divide both sides with 6 so:

6x ÷ 6 = 192 ÷ 6

the two sixes cancels out each other so

x = 32

the you replace the 32 in the equation in the place of x so the length would be 4 + 32 x 2 = 68.