Review: to simplify an expression, combine like terms by adding orsubtracting coefficients only. like terms have the same variable (letter orsymbol that represents a quantity).example: 17a + 4 - 5a - 3 = (17a - 5a) + (4-3) = 12a + 1simplify this expression. 10b + 7 - 3 - 2

10b + 2

Step-by-step explanation:

To simplify this expression. 10b + 7 - 3 - 2​ use the sample you demonstrated above to simplify it

10b + 7 -3 -2

combine the like terms

10b + 7 - 5

10b + 2

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation: