K the concern is x/-eight - 9 = 3 + 9 +9 you wish to have to get the x through it can be self so you do the reverse x/-8 = 12 The nines cancell every different out on the left and the correct equals 12 Now you wish to have to do the reverse of division which is multiplication. If you do it on one side, you have to do it on the other facet. (-eight) * x/-8 = 12 * (-eight) The -8s cancell out on the left so all you will have left is x and 12*(-eight) equals -96. X= -ninety six Now all you've left is to do the assess and alternative the reply into the equation. Hope that this helps. I educate this day-to-day!
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(x-10y=60 )-(x+14y=12)= (-24y=48)~> y=-24/48=-0,5
K the concern is x/-eight - 9 = 3 + 9 +9 you wish to have to get the x through it can be self so you do the reverse x/-8 = 12 The nines cancell every different out on the left and the correct equals 12 Now you wish to have to do the reverse of division which is multiplication. If you do it on one side, you have to do it on the other facet. (-eight) * x/-8 = 12 * (-eight) The -8s cancell out on the left so all you will have left is x and 12*(-eight) equals -96. X= -ninety six Now all you've left is to do the assess and alternative the reply into the equation. Hope that this helps. I educate this day-to-day!