Question

A)4y + 9y + 18= б) 12.3a + 3.6a - 9 = в) - 2n - 2n - 2n= г) t + 6.3t - 2.1t=

Answer 1

Ответ:

Объяснение:

A)4y + 9y + 18= 13у+18

б) 12.3a + 3.6a - 9 =15,9а-9

в) - 2n - 2n - 2n=-6n

г) t + 6.3t - 2.1t=5,2t

Answer 2

It looks like you've provided a list of mathematical expressions. It seems you might want me to simplify each expression and solve for the respective variables. Let's go through them one by one:

A) Simplify and solve for 'y': 4y + 9y + 18

Combining like terms: (4 + 9)y + 18 13y + 18

B) Simplify and solve for 'a': 12.3a + 3.6a - 9

Combining like terms: (12.3 + 3.6)a - 9 15.9a - 9

C) Simplify and solve for 'n': -2n - 2n - 2n

Combining like terms: (-2 - 2 - 2)n -6n

D) Simplify and solve for 't': t + 6.3t - 2.1t

Combining like terms: (1 + 6.3 - 2.1)t 5.2t

So, after simplifying and solving each expression, we have: A) 13y + 18 B) 15.9a - 9 C) -6n D) 5.2t