Respuesta :
Answer:
Merchants developed methods to track spending and sales.
Mathematicians created symbols so that calculations could be understood.
People began to use a letter to show an unknown number in an equation.
Edge 2021
Answer:
Choose the word or phrase that best completes each sentence.
Merchants developed
✔ methods
to track spending and sales.
Mathematicians created
✔ symbols
so that calculations could be understood.
People began to use a
✔ letter
to show an unknown number in an equation.Explanation: