Question

x+7/8=4 what does x means

Answer 1

help

Answer 2

one sec

Answer 3

x=25/8

Answer 4

@kittygirl99

Answer 5

kk

Answer 6

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

x+7/8-(4)=0
7
Simplify —
8

Rewrite the whole as a fraction using 8 as the denominator :

x x • 8
x = — = —————
1 8

Adding up the two equivalent fractions
Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

x • 8 + 7 8x + 7
————————— = ——————
8 8

Rewrite the whole as a fraction using 8 as the denominator :

4 4 • 8
4 = — = —————
1 8

Adding up the two equivalent fractions

(8x+7) - (4 • 8) 8x - 25
———————————————— = ———————
8 8


Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, I would multiply both sides of the equation by the denominator.

Here's how:

8x-25
————— • 8 = 0 • 8
8

Now, on the left hand side, the 8 cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :
8x-25 = 0

Solve : 8x-25 = 0

Add 25 to both sides of the equation :
8x = 25
Divide both sides of the equation by 8:
x = 25/8 = 3.125

Your answer would now be x = 25/8 = 3.125.