Question

Can anyone help please

Answer 1

Answer:

10

Step-by-step explanation:

First you set 3x - 11 to x + 9

Than subtract x from both sides.

Than add 11 to both sides.

Than divide both sides by 2.

3x - 11 = x + 9

2x - 11 = 9

2x = 20

x = 10

Answer 2

Answer:

x = 10

Step-by-step explanation:

All sides are equal in rhombus

3x - 11 = x +9

3x - x = 9 +11

2x = 20

x = 20/2

x = 10