Question

Please help
x+yz
When x=4 y= -2 z= 4/5
Please explain on how you got your work.

Answer 1

The answer is 2 2/5 or 12/5. My explanation is shown below. (I substituted the numbers in for the letters)

Answer 2

substitute the numbers for the variables

4+(-2)(4/5)

easier if you turn 4/5 into a decimal

4+(-2)(0.8)

multiply -2 and 0.8

4+(-1.6)

add

4-1.6

answer is 2.4