Answer:
21
Step-by-step explanation:
Hi there!
We are given the expression x(y-z), and we want to evaluate it if x=3, y=9, and z=2
As we're given the values of the variables, we can substitute those values into the expression to find out what the value of the expression is.
So substitute 3 as x, 9 as y, and 2 as z in the expression above
x(y-z)
3(9-2)
Now we must follow the order of operations; start by subtracting 2 from 9 (do the stuff inside the parentheses first)
3(7)
Now multiply 3 and 7 together
<u>21</u>
Hope this helps!
Answer:+6
Step-by-step explanation:
2 times 2z= 4z 2 times 4=8 -2 times 3z= -6z -2 times 10= -20 then after u do the multiplication you do this! step by step! 6z minus 4z= 2z then do -20 minus 8= -12 divided by -2z 1 should be= +6
Answer:
x is 30
Step-by-step explanation:
1/2 ( x + 6 ) = 18
1/2x + 3 = 18
- 3 - 3
1/2x = 15
· 2 · 2
x = 30
Answer:
3
Step-by-step explanation:
