Question

he thinks of a number, n
Write an expression for the number he gets when
a.He multiplies the number by 11.
b.He multipliesthe number by 2 then adds 10.
c.He subtracts 5 from the number and then divides by 4.

Answer 1

Answer:

a 11n

b 2n+10

c(x-5)÷4

Hope u like the answer

Answer 2

Answer:

Let think a number x.

According to the question, 8\left(x-\frac{5}{2}\right)=3x8(x−25)=3x

\Rightarrow\ 8x-\frac{8\times5}{2}=3x⇒ 8x−28×5=3x

\Rightarrow\ 8x-4\times5=3x⇒ 8x−4×5=3x

\Rightarrow8x-20=3x⇒8x−20=3x

\Rightarrow8x-3x=20⇒8x−3x=20

\Rightarrow5x=20⇒5x=20

\Rightarrow x=\frac{20}{5}=4⇒x=520=4

Hence, the number is 4.