Question

Find the value of x if the perimeter of rectangle is 186 cm breadth 5x+6 and length 2x+66​

Answer 1

Answer:

Perimeter 186

1. x=5x+6

x=5+6 11

1. 11+2x+66
2. now x=11+2+66=79

Answer 2

$\huge\fcolorbox{red}{cyan}{x\:=\:3}$

Step by Step Explaination :-

• Length = 2x + 66

• Breadth = 5x + 6

• Perimeter = 186

$= > \boxed{ \bf \color {red}{perimeter = 2(l + b)}} \\ = > 2(l + b) = 186 \\ = > 2((2x + 66) + (5x + 6)) = 186 \\ = > 2(7x + 72) = 186 \\ = > 14x + 144 = 186 \\ = > 14x = 186 - 144 \\ = > 14x = 42 \\ = > x = \frac{42}{14} \\ = > \boxed{x = 3}$