Answer:
use BIDMAS :)
Step-by-step explanation:
Brackets
Indicies
Division
Multiplication
Addition
Subtraction
5 + 10 x 4² - 10 x 9 (4² = 16)
5 + 10 x 16 - 10 x 9
5 + 160 - 90
165-90 = 75
your answear is 75 :)
