Answer:
x=3
Step-by-step explanation:
9
225/25= 9
9 batches
a + b = + 2 = 2 = , thus
(a + b)² = ( )² = × = =
14
-3u = 4+5
-3u = 9
u = -3
7u + 7
7(u +1) = 7(-3+1)
7(-2)