Four times the sum of a number and 5 is - 16. Find the number.
Answers
Step-by-step explanation:
A
n
s
w
e
r
Western Ghats
Abstract. The Western Ghats are one of the globally recognized “hot spots” of biodiversity in India. In Maharashtra small patches of forest in the Ghats are protected by local people as “sacred groves.” They are called “Devrai” which have been managed by local people and are dedicated to the deity in the grove.
Step-by-step explanation:
Let x be the number .
Your equation will read 4x=5(x+4)
4x = 5x +20
0 = x + 20
-20 = x
Your answer is - 20 ie minus 20
This question is a bit unusual but lets substitute our answer back just to check .
Left side of equation is 4x , that comes out to minus 80
Right side of equation is 5 ( - 16 ) , which is minus 80
As you can see the left and right sides equal each other proving our answer
of minus 20 is correct !
Write it out, let’s use our old friend “x” as the number.
4x = 5(x + 4) *four times the number = 4x, 5 times the number + 4 = 5 • (x+4) = 5(x+4)
4x = 5x + 20 *5•x = 5x, 5•4 = 20, therefore 5(x+4) = 5x + 20
-x = 20 *subtract 5x from both sides
x = -20 *divide by -1 by both sides
Remember when I said x is the number? This means that the number is negative twenty.