Question

1) 2(х-7)+5х(-9)+25 2)-0.5(2х-4)-8(3х-4)-13 3)19х+8(9-4х)​

Answer 1

Объяснение:

1) 2(х-7)+5х(-9)+25 =2х-14-45х+25=11-43х

2)-0.5(2х-4)-8(3х-4)-13=-х+2-24х+32-13=

=21-25х

3)19х+8(9-4х)=19х+72-36х=72-17х

Answer 2

Let's solve each of the given expressions step by step:

1. 2(x-7) + 5x(-9) + 25

First, distribute the coefficients: 2x - 14 + (-45x) + 25

Combine like terms: -43x - 14 + 25

Simplify further: -43x + 11

So, the simplified expression is -43x + 11.

2. -0.5(2x-4) - 8(3x-4) - 13

Distribute the coefficients: -0.5(2x) + (-0.5)(-4) - 8(3x) + (-8)(-4) - 13

Simplify each term: -1x + 2 + (-24x) + 32 - 13

Combine like terms: -25x + 21 - 13

Simplify further: -25x + 8

Thus, the simplified expression is -25x + 8.

3. 19x + 8(9 - 4x)

Distribute the coefficient: 19x + 8(9) - 8(4x)

Simplify each term: 19x + 72 - 32x

Combine like terms: (19x - 32x) + 72

Simplify further: -13x + 72

Therefore, the simplified expression is -13x + 72.