Question

3(x+ (4х — 5x)) — 2(x — (6х + 3) ) при х = 3​

Answer 1

Ответ:

$36$

Объяснение:

$3(x+(4x-5x))-2(x-(6x+3))=3(x-x)-2(x-6x-3)=3 \cdot 0-2(-5x-3)=$

$=-2 \cdot (-5x)-2 \cdot (-3)=10x+6;$

$x=3 \Rightarrow 10x+6=10 \cdot 3+6=30+6=36;$

Answer 2

To solve this expression for x = 3, you'll need to substitute the value of x into the expression and then simplify it step by step. Here's the calculation:

1. Substitute x = 3 into the expression: 3(x + (4x - 5x)) - 2(x - (6x + 3))

2. Simplify each part of the expression within the parentheses: 3(3 + (43 - 53)) - 2(3 - (6*3 + 3))

3. Continue simplifying inside the parentheses: 3(3 + (12 - 15)) - 2(3 - (18 + 3))

4. More simplification within the parentheses: 3(3 + (-3)) - 2(3 - (21))

5. Continue simplifying: 3(0) - 2(3 - 21)

6. Further simplification: 0 - 2(-18)

7. Now, multiply -2 by -18: 0 + 36

So, when x = 3, the expression simplifies to 36.