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-2+7x-{5x-[4y-(3-8x)+9]-10y}???solution po plss??

Sagot :

KookEinid
-2 + 7x - { 5x - [ 4y - (3 - 8x ) + 9 ] - 10y }
-2 + 7x + -1 ( 5x - ( 4y - ( 3 - 8x ) + 9 ) -10y )
-2 + 7x + -1 ( 5x) + - 1 ( -4y ) + ( -1 ) ( 3 ) + -1 ( -8x ) + ( -1 ) ( -9 ) + - 1 ( -10y )
-2 + 7x + - 5x + 4y + -3 + 8x + 9+10y
( 7x + -5x + 8x ) + ( 4y + 10y ) + ( -2 + -3 +9 )
10x + 14y + 4
                                                                          -KookEin
PEMDAS and Rule on subtraction of polynomials, where the signs of each term of the subtrahend is changed, then proceed to addition rule.

1.)Simplify the inner part:
 4y-(3-8x)+9
= 4y + (-3 + 8x) + 9
= 4y - 3 + 9 + 8x
= 4y + 8x + 6

2)  5x - (4y + 8x + 6)-10y
= 5x + (-4y - 8x - 6) - 10y
= 5x - 4y - 8x - 6- 10y
= 5x - 8x - 4y- 10y - 6
= -3x -4y - 10y - 6
= -3x -14y -6

3) -2 + 7x - (-3x -14y -6)
= -2 + 7x + (+3x +14y + 6)
= -2 + 7x + 3x + 14y  + 6
= 7x + 3x + 14y + - 2 + 6
= 10x + 14y + 4

FINAL ANSWER: 10x + 14y + 4