7x - 8 = 3x + 4
4x - 8 = 4
4x = 12
x = 3
Check it.
21 - 8 = 9 + 4
It checks.
If ten times the number n decreased by 13 is equal to the square of the same number n increased by 3, then the value of n is either 8 or 2.
3x+32=4x-15 3x-4x=-15-32 x=-47
6n - 3n which simplifies to 3n.
x - 2 = 7 + x/4 4x - 8 = 28 + x 3x = 36 x = 12
x-4=8+x/5 5(x-4)=5(8+x/5) 5x-20=8+x 4x=28 x=7
If ten times the number n decreased by 13 is equal to the square of the same number n increased by 3, then the value of n is either 8 or 2.
3x+32=4x-15 3x-4x=-15-32 x=-47
6n - 3n which simplifies to 3n.
Let the number be x:- 4x+40 = 100-x => 5x = 60 => x = 12 So the number is 12
Decreased
Eleven
Australia's population has increased
If force is increased and pressure remained the same, then the area must have been decreased.
Yes because one number has been increased by a 1/4 while the other number has been decreased by a 1/4 So 3*80 = 240 and 4*60 = 240
x+5 = 7 - (2x) 3x = 2 x = 2/3 The number is 2/3
x3 + 4x
x = number Four times the number (4x) is the same as the number increased by 78 (x + 78). Since they are both equal, then 4x = x + 78 4x - x = 78 3x = 78 x = 26