Question

Find x and the perimeter of the triangle.

x=
perimeter=

Answer 1

x=10

perimeter=129

step wise

4x+7=5x-3

4x-5x=-7-3

-1x=-10

x=10

then,

perimeter=(4×10+7)+(5×10-3)+(4×10-5)

=129 answer

Answer 2

x = 10 Perimeter: 129

Explanation:

FINDING X:

4x+7 = 5x -3

7 = x -3

10 = x

x = 10

PERIMETER:

4x + 7 + 5x - 3 + 4x - 5

Combine the "x" values

13x + 7- 3 - 5

Combine the numbers

13x - 1

13(10) -1

130 - 1

129