Question

The perimeter of the triangle below is 73 units. Find the value of x.

Answer 1

Answer:

3x+4x-1+x+2=73

8x+1=73

8x=73-1

8x=72

8x/8=72/8

x=9

Answer 2

Solution:

Perimeter (p) of a triangle:

$p = a + b + c$

P = 73 units

To find the value of x

$73 = 3x + 4x - 1 + x + 2$

→$73 = 8x + 1 \\ 73 - 1 = 8x$

→$8x = 72$

→$\frac{8x}{8} = \frac{72}{8}$

$x = 9$