2.1 · Introduction to algebraLesson 1 of 8Free preview
Using letters to represent numbers
A letter stands for any number. n packets of crisps at ৳20 each cost 20n taka, whatever n is.
2.1 · Introduction to algebraLesson 1 of 8Free preview
A letter stands for any number. n packets of crisps at ৳20 each cost 20n taka, whatever n is.