How do you evaluate #w-3x+y# if w=6, x=0.4, y=1/2, z=-3? Algebra Expressions, Equations, and Functions Variable Expressions 1 Answer Alan P. Dec 23, 2016 #color(magenta)(4.3)# Explanation: If #color(red)w=color(red)6# and #color(blue)x=color(blue)(0.4)# and #color(green)y=color(green)(1/2# then #color(red)w-3color(blue)x+color(green)y# #color(white)("XX")=color(red)(6)-3 xx (color(blue)0.4) +color(green)(1/2)# #color(white)("XX")=5-1.2+0.5# #color(white)("XX")=3.8 +0.5# #color(white)("XX")=4.3# Answer link Related questions How do you write the variable expression for: a quotient of 2 and the sum of a number and 3 ? What are variables? What are variable expressions? How do you write variable expressions? How do you evaluate variable expressions? How do you simplify the expression #3x-x+4#? How do you write a quotient of a number and 6 as an expression? How do you evaluate the expression #2x+1# for #x=1#? How do you write a product of a number and 2 as an expression? How do you write 5 less than 2 times a number as a variable expression? See all questions in Variable Expressions Impact of this question 1172 views around the world You can reuse this answer Creative Commons License