Question

3x-7(3x-4)=5(2x-7)пжжжжжжж​

Answer 1

Ответ:

2,25

Пошаговое объяснение:

3x-7*3x-7*(-4)=5*2x+5*(-7)

3x-21x+28=10x-35

-28x=-63

x=9/4

x=2,25

Answer 2

To solve the equation 3x - 7(3x - 4) = 5(2x - 7), we will apply the distributive property and then simplify the equation step by step:

Starting with the left side of the equation: 3x - 7(3x - 4) Expanding the expression inside the parentheses: 3x - 7 * 3x + 7 * 4 Simplifying further: 3x - 21x + 28

Now, let's simplify the right side of the equation: 5(2x - 7) Applying the distributive property: 5 * 2x - 5 * 7 Simplifying further: 10x - 35

Now, we have the equation as: 3x - 21x + 28 = 10x - 35

Next, let's combine like terms on both sides of the equation: -18x + 28 = 10x - 35

To isolate the variable x, we'll bring all the terms containing x to one side and the constant terms to the other side:

Subtracting 10x from both sides: -18x - 10x + 28 = -35

Combining like terms: -28x + 28 = -35

Now, let's isolate the term with x: Subtracting 28 from both sides: -28x + 28 - 28 = -35 - 28 -28x = -63

To solve for x, we'll divide both sides by -28: -28x / -28 = -63 / -28 Simplifying: x = 63/28

The solution to the equation 3x - 7(3x - 4) = 5(2x - 7) is x = 63/28.