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<span>d/4=4228/7 </span>
<span>d/4=604</span>
<span>d=604*4</span>
<span>d=2416</span>
<span></span>
<span>d/8=4228/7 </span>
<span>d/8=604</span>
<span>d=604*8</span>
<span>d=4832</span>
<span>d/4=2114/7</span>
<span>d/4=302</span>
<span>d=302*4</span>
<span>d=1208</span>
1,2x-(-0,4x+2,4y) = 1,2х + 0,4х - 2,4у = 1,6х -2,4у
Если x=-5 ; y=-0,5, то
1,6 х - 2,4у = 1,6 * (-5) - 2 * (-0,5) = -8 + 1 = -7