The sum of twice and four times of the variable x is __________

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The sum of twice and four times of the variable x is 6x

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अध्याय 3: Algebra - Exercise 3.3 [पृष्ठ ६८]

अध्याय 3 Algebra
Exercise 3.3 | Q 1. (iii) | पृष्ठ ६८

Write the following using literals, numbers, and signs of basic operations:
y decreased by 7

If x = 1, y = 2 and z = 5, find the value of xy + yz − zx

Write the coefficient of p in −2pqr

Add

2 + x − x² + 6x³, −6 −2x + 4x² −3x³, 2 + x², 3 − x³ + 4x − 2x²

Subtract:

6x³ − 7x² + 5x − 3 from 4 − 5x + 6x² − 8x³

Simplify:

x⁴ − 6x³ + 2x − 7 + 7x³ − x + 5x² + 2 − x⁴

How much less than x − 2y + 3z is 2x − 4y − z?

Sharad used to take p cups tea a day. After having some health problem, he takes p – 5 cups of tea a day.

Give expression for the following case.

7 subtracted from −m

Five times a number increased by 7 is 27.