Advertisements
Advertisements
Question
Find the value of 5x + 3y − 6z, when x = 3, y = 5 and z = 4
Solution
5x + 3y − 6z
= 5 × 3 + 3 × 5 − 6 × 4
= 15 + 15 − 24
= 30 − 24
= 6
APPEARS IN
RELATED QUESTIONS
Fill in the blank, when:
x = 3, y = 6, z = 18, a = 2, b = 8, c = 32 and d = 0.
`"y"/"x"` = ...........
If a = 3, b = 0, c = 2 and d = 1, find the value of abc − bcd + cda
If x = 2, y = 5 and z = 4, find the value of the following:
`(5"x"^4"y"^2"z"^2)/(2"x"^2)`
Simplify:
(a + b) − (c + d) − (e − f)
Simplify:
− (y − x) − (x + y − `overline(2"x"+"y")`)
Simplify:
`"a"−[−{−(a−overline("b"-"c"))}]`
Fill in the blank:
2t + r − p − q + s = 2t + r − (..................)
Insert the bracket as indicated:
a + 4b − 4c = a + (...............)
If P = − 12x2 – 10xy + 5y2, Q = 7x2 + 6xy + 2y2, and R = 5x2 + 2xy + 4y2 ; find P – Q
If x = − 3, find the value of 2x3 + 8x2 – 15.
