Question

Determine the value of x in the figure answers: x =43 x = 8 x = –4 x = 4

Answer 1

x=4

step by step-
4x-8=x+4
+8 +8
—————
4x=x+12
-x -x
—————
3x=12
— —
3 3
—————
x=4

Answer 2

x = 4

Explanation:

Since the two base angles are equal, the sides must be equal

4x-8 = x+4

Subtract x from each side

4x-x -8 = x+4-x

3x -8 =4

Add 8 to each side

3x-8+8 = 4+8

3x= 12

Divide by 3

3x/3 = 12/3

x = 4