Answer:
Step-by-step explanation:
1) 5+2*1-3+8 = 5+2-3+8 = 7-3+8 = 4+8 = 12
2) 2+5*1 = 2+5 = 7
a) 5+2 x 1-3+8
5+2-3+8
=12
b) 2+5 x 1
2+5
=7
