When i triple my number and add five i get twenty six what is my number

26-5=21

21/3=7

7 is your number

to check work

3*7=21+5=26

Your number is has to be 7 since if u time 7x3 you get 21. Then u add 21+5 and u get 26

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

happy to

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go on the tube you might find some information there