tolong dijawab no. 10!!please pake cara!

PLSV

10 - 2b = 3
-2b = 3 - 10
-2b = -7
b = -7/-2
b = 3,5

9.
2a + 6 = 32
2a = 32 - 6
2a = 26
a = 13

10.
10 - 2b = 3
-2b = 3 - 10
-2b = -7
b = 7/2
atau b = 3 1/2