7. What is the algebraic expression of " eleven subtracted from a number equals 60."?
a. 11 - b=60
b. b - 11 =60
c. 60-11 =b
8. What is "twice a number added to 50"in an algebraic expression?
a. 2+50
b. 2x=50
c. 50 + 2x
9. What is the word sentence of "X-5 = 10"?
a. x minus five =ten b. A number and five equals ten. c. A number decreased by five is ten.​