-(3c + 5x) - (9c - 6x) 19y + 2 (3 - 4y) + 11y (2x + 3) - (5x +11) = 7 + (13 - 2x)...

Question

-(3c + 5x) - (9c - 6x)
19y + 2 (3 - 4y) + 11y
(2x + 3) - (5x +11) = 7 + (13 - 2x)
Упростите, заранее спасибо

Answer 1

-(3с+5х)-(9с-6х)=-3с-5х-9с+6х=-12с+1х

Comments

19у+2(3-4у)+11у=19у+6-8у+11у=22у+6

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А последнее?

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(2х+3)-(5х+11)=7+(13-2х) 2х+3-5х-11=7+13-2х -3х+3=20-2х -3х+2х=20-3 -1х=17 х=17/(-1) х=-17

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Спасибо!