Question

Упростить выражение (раскрыть скобки). 1) (3х+у) –2 (5х – у) = 3х+у – 10х+2у = –7х+3у; 2) 3х(а+1,5) –4ах = 3ах+4,5х – 4ах = 4,5х – ах; 3) –6 (х + у)+3 (2х – у) = – 6х – 6у + 6х – 3у = –9у.

Answer 1

Ответ:

3х+у-10х+2у=3х+у-10х+2у=-7х+3у

3ха+4.5-4ах=3ах+4.5х-4ах=4.5х-ах

-6х-6у+6х-3у=-6х-6у+6х-3у=-9у

Answer 2

1. (3x + y) - 2(5x - y) = 3x + y - 10x + 2y = -7x + 3y

2. 3x(a + 1.5) - 4ax = 3ax + 4.5x - 4ax = 4.5x - ax

3. -6(x + y) + 3(2x - y) = -6x - 6y + 6x - 3y = -9y