<span>((182+62)*(182*182-182*62+62*62)-244*182*62)/244=(244*(182*182-182*62+62*62-182*62)/244=182*182-2*182*62+62*62(182-62)*(182-62)=120*120=14400</span>
4х - 3у = -1
х - 5у = 4
4х - 3у = -1
х = 4 + 5у
4 (4 + 5у) - 3у = -1
х = 4 + 5у
16 + 20у - 3у = -1
х = 4 + 5у
17у = -17
х = 4 + 5у
у = -1
х = 4 + 5* (-1)
у = 1
х = 4 - 5
у = 1
х = -1
X+y=1500 11x+11y=16500
1,1x+1,2y=1720 11x+12y=17200
y=700
x=1500-700=800
Q=b2/b1=296:74=4
b4=b3*q=1184*4=4736