Question

please solve step by step and explain ​

Answer 1

Since in parallelogram, opposite angles are equal.
Therefore, 6x + 10 = 130
6x = 130 - 10
6x = 120
x = 20

Answer 2

Answer:

6a + 10 =130

i.e. 6a = 120

i.e. a = 120/6

i.e. a = 20