15
same as saying -4 +19 = 15
The absolute value of 19 is 19. If x is positive , absolute x equals x.
4
1/4
4
7
If you mean: x^2+15-3x then its value is 19 when x equals 4
Say you have an algebraic expression y = 3x +4 For a given value of x = 5 substitute that number in place of x in the expression, so in this case y = 3(5) + 4 = 19
19 - 4 * 2 + 8 = 19 - 8 + 8 = 19 The multiplication must be done first: remember BIDMAS/PIDMAS/BODMAS/PODMAS
E
3
It is an algebraic expression that can be simplified depending on the plus or minus value of 4
(35 - 16)/4 = 19/4
The absolute value of 19 is 19. If x is positive , absolute x equals x.
-2
(21-3)times(7+4)
4
1/4