-3+(-21)+18
-3+(-21)+18
-3-21+18
-24+18
-6
solve for x in this equation 4(x+3)=x+6
You know, it'd be nice if you showed some of your work. I already know how to do this ...
4(x+3)=x+6
4x + 12 = x+6
3x+12 = 6
3x = -6
x = -2
To evaluate the expression -3 + (-21) + 18, you need to follow the order of operations, also known as PEMDAS.
1. Start by simplifying parentheses or brackets:
-3 + (-21) + 18 = -3 + -21 + 18
2. Next, perform any additions or subtractions from left to right:
-3 + -21 + 18 = -24 + 18
3. Finally, perform the remaining addition or subtraction:
-24 + 18 = -6
Therefore, -3 + (-21) + 18 equals -6.