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Evaluate the following expression using the values given: Find 5x − 3y − z if x = −2, y = 2, and z = −3 −19 19 13 −13
I know that first, I would fill in the blanks.
Do you need me to explain it, or to just give you an answer?
I do not want an answer, I just want someone to kind-of watch my work, so that I know I am solving it the right way. Asking for the answer would be against openstudy policies...
Like integer rules?
first, I would solve the multiplication, so 5x-2=-10, and 3x2=6, so -10-6-(-3), right?
Yes that's correct!
okay.. next, it would become -16- (-3), right, since we subtract 6 from -10?
then it would become -19??
Not quite... use your integer rules
Yes, now do you why?
not really, both are negative, and we are not multiplying?
Take this as an example:
6 - (-3) When there are 2 minus signs, you add 6 + 3
Now look at the one we were working on above
-16 - (-3) = -16 + 3 = -13
oh they cancel eachother out?
See it now?
Yea, the 2 minus signs form a plus
can u help with one more? Again, I dont want an answer, I want help
Evaluate the following: −3 − (−2). −5 −1<< I followed same rule as last time... 1 −6
Wow, great job:\[-3 - (-2) = -3 + 2 = -1\] You are correct!