Question

an expression is _ if it has no grouping symbols and all the like terms have b. what will be in dash​

Answer 1

Answer:

You can think of a numerical expression as a number sentence. Instead of words, it can have numbers, variables (letters that hold a place for a number you don't know yet), math symbols that tell you whether to add, subtract, multiply or divide, and grouping symbols that tell you which order to follow.

Long ago, mathematicians from different countries met to agree on some rules so that anyone doing the same math problem would get the same answer. The rules are collectively known as the Order of Operations. This lesson is the first step in learning the order of operations.