The sum of the expression 70a and 21b is equivalent to 7(10a + 3b).
Step-by-step explanation:
EquationAn equation is an expression that is used to show the relationship between two or more variables and numbers.Given the expression:7(10a + 3b)Opening the bracket:= 70a + 21bThe sum of the expression 70a and 21b is equivalent to 7(10a + 3b).
