Question

7x=-310+3x (4x+16)(x-7)=0 8×(30-x)=352

Answer 1

Ответ:1 - -77.5 2-х=-14 3-х=-14

Пошаговое объяснение:

Answer 2

Let's solve each equation step by step:

1. 7x = -310 + 3x

To solve this equation, we can start by isolating the x terms on one side and the constant terms on the other side.

Subtracting 3x from both sides: 7x - 3x = -310 + 3x - 3x 4x = -310

Dividing both sides by 4: (4x)/4 = (-310)/4 x = -310/4 x = -77.5

Therefore, the solution to the equation 7x = -310 + 3x is x = -77.5.

2. (4x + 16)(x - 7) = 0

To solve this equation, we can use the zero-product property, which states that if a product of factors is equal to zero, then at least one of the factors must be equal to zero.

Setting each factor equal to zero:

4x + 16 = 0 4x = -16 x = -16/4 x = -4

x - 7 = 0 x = 7

The solutions to the equation (4x + 16)(x - 7) = 0 are x = -4 and x = 7.

3. 8 × (30 - x) = 352

To solve this equation, we will simplify and isolate x.

Distributing the 8 to (30 - x): 8 × 30 - 8x = 352 240 - 8x = 352

Subtracting 240 from both sides: 240 - 8x - 240 = 352 - 240 -8x = 112

Dividing both sides by -8: (-8x)/(-8) = 112/(-8) x = -14

Therefore, the solution to the equation 8 × (30 - x) = 352 is x = -14.

Summary of solutions:

• 7x = -310 + 3x: x = -77.5
• (4x + 16)(x - 7) = 0: x = -4, x = 7
• 8 × (30 - x) = 352: x = -14