The sum of twice a number and three equals five. Find the number
2 answers:
2n + 3 = 5
2n = 2
n = 1
the sum of 2 times a number and three means you add 2n + 3 and since it is equal to 5 you then solve for n.
Let ' a number ' = x
twice a number = 2x
The sum of 2x and three = 2x + 3
...equals five: 2x + 3 = 5
Find the number
-------------------------------------------------------------------------------------------------------
2x + 3 = 5
Isolate the x. Do the opposite of PEMDAS. Note that because of the equal sign, what you do to one side, you do to the other.
Subtract 3 from both sides
2x + 3 (-3) = 5 (-3)
2x = 5 - 3
2x = 2
divide 2 from both sides
2x/2 = 2/2
x = 2/2
x = 1
x = 1 is your answer
hope this helps
You might be interested in
Answer:
2x-3
Step-by-step explanation:
Example w:5
2(5)-3=7
twice 5 then -3
The value of x is 12 or 32
To find the area of this rectangle you multiply the length by the width, like so (x+2) x (2x+5) .
To find the perimeter of this rectangle you add all the sides using this equation,
(x+2)+(x+2)+(2x+5)+(2x+5) .
Answer:
8/2 - 20/5
Step-by-step explanation:
please mark brainliest.
315 divided by 9 = 35 hours
