Answer with Step-by-step explanation:
Let one ⊕ represents fifteens.
Mathematically, we assume that
x represents fifteens
So, our equation becomes,
Model can be represented as :
7×⊕ + 15 ×⊕
=⊕⊕⊕⊕⊕⊕⊕ + ⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕
=⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕⊕
Let us assume the unknown number to be = x
Then, based on the information's already given in the question the equation can be written as
7x - 12 = 16
7x = 16 + 12
7x = 28
x = 28/7
= 4
So from the above deduction we can conclude that the unknown number in the question is 4. I hope the procedure is simple enough for you to understand.You can always use this method in future for solving similar problems.
Answer:
4/5 ÷ 3/4 = 1 1/15
Step-by-step explanation:
That is a direct division, if you are confused by the decimal point, lets get rid of it! We can get rid of the decimal point multiplying the upper and lower parts of the division by 10, lets do it:
<span>62.8 / 3
= 10*</span><span>62.8 / 10*3
= </span><span>628 / 30
we can try to reduce the fraction dividing by 2 the upper and lower parts:
= 314/15
and now we have to make the operation:
= 20.93</span>
