Question

4x -(3x-7)+(x+3), 0,4(4x-3)+1,4-1,6x. 4(2x-5)+3x+20. 0,3(3x+5)-1,3-0,8x

Answer 1

Ответ:

1)

$2x + 10$

2)

$0.2$

3)

$11x$

4)

$0.2 + 0.1x$

Объяснение:

1.

$4x - (3x - 7) + (x + 3) = 4x - 3x + 7 + x + 3 = 2x + 7 + 3 = 2x + 10$

2.

$0.4(4x - 3) + 1.4 - 1.6x = 1.6x - 1.2 + 1.4 - 1.6x = 0.2$

3.

$4(2x - 5) + 3x + 20 = 8x - 20 + 3x + 20 = 11x$

4.

$0.3(3x + 5) - 1.3 - 0.8x = 0.9x + 1.5 - 1.3 - 0.8x = 0.2 + 0.1x$