Question

6×(3x+5x)+7×-5y при x+y=3

Answer 1

Подставляй за место x и y 3 и решай

Answer 2

Везде где стоит х и у там ставь цифру 3 и решай ,если перед х или у стоит цифра её умножь!

Answer 3

To simplify the expression 6×(3x+5x)+7×-5y, we first need to substitute the value of x+y into the expression since we are given that x+y equals 3.

Given x+y=3, we can substitute x in terms of y as x=3-y.

Now let's simplify the expression:

6×(3x+5x)+7×-5y

Replace x with 3-y:

6×(3(3-y)+5(3-y))+7×-5y

Now simplify the expression inside the parentheses:

6×(9-3y+15-5y)+7×-5y

Combine like terms:

6×(24-8y)+7×-5y

Distribute 6 to each term inside the parentheses:

6×24-6×8y+7×-5y

Simplify:

144-48y-35y

Combine like terms:

144-83y

So, the simplified expression is 144-83y.