Question

If the opposite angles of a
parallelogram are (3x+15)° and (4x-
25), find the value of x.​

Answer 1

Answer:

3x+15=4x+25

3x-4x=25-15

-x=10

x=-10

check

3(-10)+15=4(-10)+25

-30+15=-40+25

-15=-15

Answer 2

Answer:

The value of x is 40°

Step-by-step explanation:

The opposite angel of a parallelogram is equal.

.·. 3x + 15 = 4x - 25

15+25 = 4x - 3x

.·. x = 40