this is a word problem
is means = or equal to
let the number be A
twice the number of A means 2 x A
= 2A
twice the the number of A is divided by 6
this means that 2A / 6 = 42
for the first question the answer is 2A / 6 = 42
Second question
sum means +
we have two numbers which are A and 5
their sum = A + 5
two times the sum of A and 5 can be written as
= 2(A + 5)
Recall, that is represent =
therefore, 2(A+5) = 20
The answer for the second question is 2(A+5) = 20
Third question
Difference means minus
We have two numbers which are A and 7
difference of the A and 7 can be written as A - 7
four time the difference can be written as
4(A-7)
4(A-7) = 32
The answer is 4(A-7) = 32
