It's just a mathematical polynomial: 7x + 3y.
The mathematical term of pi is approximated equal to 22/7. :)
7x + 29 = 36 7x + 29 - 29 = 36 - 29 7x = 7 7x/7 = 7/7 x = 1
None. 7x - 1 is not equal to 7x - 7.
7x + 7 = 7(x + 1)
7x+7=28x 28x-7x=7 21x=7 x=3
In 7x+7, x is a variable.
7x + 2 = -4 7x + 2 - 2 = -4 - 2 7x = -6 7x/7 = -6/7 x = -6/7
8x=7x-7 x=-7
-8x+7 = -7x-2 -8x = -7x-2-7 -8x=-7x-9 -8x+7x=-9 -1x=-9 x=-9/-1 x=9
If you mean: 7x = 49 then the value of x is 7
7x + 8 = 36 - 8 = - 8 -------------- 7x = 28 7x/7 = 28/7 x = 4