Question

two opposite angles of a parallelogram are (4x-20) 0 and (40-x)0. find the value of x​

Answer 1

Answer:

12

Step-by-step explanation:

Opposite angles of parallelogram are equal so,

(4x-20)0= (40-x)0

4x-20= 40-x

4x+x = 40+ 20

5x = 60

x = 12

Answer 2

Answer:

$(4x - 20) +( 40 - x) = 180 \\3x + 20 = 180 \\ 3x = 180 - 20 \\ 3x = 160 \\ x = 160 \div 3 = 53.33$