Answer:
x = 12
Step-by-step explanation:
ZY is a midsegment and is half the measure of SQ, that is
x + 2 = [tex]\frac{1}{2}[/tex] (3x - 8) ← multiply through by 2 to clear the fraction
2x + 4 = 3x - 8 ( subtract 2x from both sides )
4 = x - 8 ( add 8 to both sides )
12 = x
