Advertisements
Advertisements
Question
If x = 3, y = 2 and z = 1; find the value of 2x – 3y + 4z + 5
Sum
Solution
x = 3, y = 2, z = 1
2x – 3y + 4z + 5
= 2 × 3 − 3 × 2 + 4 × 1 + 5
= 6 − 6 + 4 + 5
= 15 − 6
= 9
shaalaa.com
Concept of Substitution
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Fill in the blank, when:
x = 3, y = 6, z = 18, a = 2, b = 8, c = 32 and d = 0.
xz + cd = ...................
State true and false:
`(2"x"-4)/("x"+1)` = − 1, when x = 1
If x = 2, y = 5 and z = 4, find the value of the following:
`"x"/(2"x"^2)`
If x = 2, y = 5 and z = 4, find the value of the following:
`"xz"/"yz"`
If m = 2, find the difference between the values of 4m3 and 3m4.
Simplify:
a − (a − b − c)
Insert the bracket as indicated:
x − 2y = − (...................)
Insert the bracket as indicated:
m + n − p = − (.............)
Simplify:
6 {3x – 8 (5x – 10)}
Simplify:
3x – 6 {3x – 8 (5x – 10)}
