Question

one-fifth of a number plus 7 is 30.​

Answer 1

Answer:

115

Step-by-step explanation:

Let the number = x

==: x/5 + 7 = 30

==: x/5 = 23

==: x = 23 * 5

==: x = 115

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Answer 2

GIVEN:-

• one-fifth of a number plus 7 is 30.

TO FIND:-

• The number.

SOLUTION:-

hey mate! Let's first write the statement in numerical form.

As the number after of is unknown it will be placed as x.

• =>1/5 of x +7=30

Now as 7 is a constant and as we know to move constant and variables we also change signs.

So when 7 will move to R.H.S. it will be subtracted from 30

• =>1/5x=30-7

Now on subtraction 30 and 7 gave 23 as difference.

• =>x/5=23

Now we will move 5 also to R.H.S. by changing signs.

• =>x=23×5

Now the product is 115

• =>x=115

hope it helped!