Question

25. Convert the following statements into equations.
(a) 3 added to a number is 11
(b) 2 subtracted from a number is equal to 15.
(c) 3 times a number decreased by 2 is 4.
(d) 2 times the sum of the number x and 7 is 13.
(e) 5 multiplied by x and then added to 10 is 20.​

Answer 1

Answer:

A: 3 + x = 11

B. x - 3 = 15

C. 3x - 2 = 4

D. 2 ( x + 7 ) = 13

E. 5x + 10 = 20 ARE THE ANSWERS

Answer 2

Answer:

let x be the unknown number in each case

(a) 3 added to a number is 11                                   -->    3+x=11

(b) 2 subtracted from a number is equal to 15.       -->    x-2 = 15

(c) 3 times a number decreased by 2 is 4.              -->    3x-2=4

(d) 2 times the sum of the number x and 7 is 13.    -->    2*(x+7) = 13

(e) 5 multiplied by x and then added to 10 is 20.​   -->    5x+10 = 20