Question

(a) 5 added to a number is 9.
(b) 3 subtracted from a number is equal to 12.
(c) 5 times a number decreased by 2 is 4.
(d) 2 times the sum of the number x and 7 is 13.

Answer 1

i hope this will help you

Answer 2

Answer:

(a)4

(b)15

(c)$\frac{6}{5}$

(d)$(\frac{-1}{2} )$

Step-by-step explanation:

We will let assume the required number be x in all the cases and then solve the linear equation given below.

(a) x+5=9

⇒x=9-5

∴ x=4

(b)x-3=12

⇒x=12+3

∴ x=15

(c)5x-2=4

⇒5x=6

∴ x=$\frac{6}{5}$

(d)2(x+7)=13

⇒2x+14=13

⇒2x=13-14

⇒2x=-1

∴ x=$(\frac{-1}{2} )$

• Hence, the required solutions are as above.

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