19+4(-18)-20
To evaluate the expression, 19 + 4(-18) - 20, we first simplify the term within the parentheses, which is 4 multiplied by -18:
4(-18) = -72
Substituting this value back into the original expression, we have:
19 + (-72) - 20
Next, we add the numbers 19 and -72:
19 + (-72) = -53
Finally, subtract 20 from -53:
-53 - 20 = -73
Therefore, 19 + 4(-18) - 20 equals -73.
To solve the expression 19 + 4(-18) - 20 step-by-step, follow the order of operations (PEMDAS/BODMAS).
1. Start with the multiplication part of the expression: 4 multiplied by -18 equals -72.
So, the expression now becomes: 19 + (-72) - 20.
2. Next, add the numbers: 19 + (-72) equals -53.
The expression now becomes: -53 - 20.
3. Finally, subtract 20 from -53: -53 - 20 equals -73.
Therefore, the answer to the expression 19 + 4(-18) - 20 is -73.