a) 89 + 79 + 72 : 2
= 89 + 79 + 36
= 168 + 36
= 204
b) 52 . 24 - 73
= 25 . 16 - 343
= 400 - 343
= 57
a) 89 +79 +72 :2
= 89 + 79 + 36
= 168 + 36
= 204
b) 5^2.2^4-7^3
= 25.16-343
= 400-343
= 57
a) 89+79+72:2
89+79+36
168+362=204
b)5^2.2^4-7^3
400-343=57