1) 5/6(4,2х-1,1/5у)-(5,4(2/9х-1,5у)) 2) 0,5(4+х)-0,4(х+3) = 2,5

Question

1) 5/6(4,2х-1,1/5у)-(5,4(2/9х-1,5у))

2) 0,5(4+х)-0,4(х+3) = 2,5

Comments

1)5/6*4,2х-5/6*11/5у-5,4*2/9х-5,4*1,5у=3 1/2х-у-1 1/5х-8,1у=3 1/2х-1 15х-7,1у=2,3х-7,1у

Answer 1

2)2+0.5x - 0.4x + 1.2=2.53.2+0.1x=2.50.1x=2.5-3.20.1x=-0.7x=-7

Comments

Спасибо!

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1)))5/6*4,2х-5/6*11/5у-5,4*2/9х-5,4*1,5у=3 1/2х-у-1 1/5х-8,1у=3 1/2х-1 1
5х-7,1у=2,3х-7,1у