Orange=x apple=y 12x + 7y =5.36 8x + 5y =3.68 Now,we can do simultaneous equation to get answer First,we have to find the same value for one of these numbers 60x + 35y =26.8 -56x -35y = -25.76 Then,add two equations to get new equation 4x = 1.04 and one equation from the begining 4x = 1.04 8x + 5y = 3.68 then divide 1.04 with 4 from the first equation to get value of x x = 0.26 8x + 5y = 3.68 Then just change x with number 0.26 in the second equation. x = 0.26 8 * 0.26 + 5y = 3.68 x=0.26 2.08 +5y = 3.68 x=0.26 5y = 3.68 - 2.08 x=0.26 5y= 1.6 x=0.26 y=0.32
12<em>r</em>+7<em>a</em>=5.36 -12<em>r </em> -12<em>r</em> What you do on one side you do on both sides 12 on the left cancels out 7<em>a</em>=5.36-12<em>r</em> /7 /7 /7 Divide 7 7 on the left cancels out 5.36/7=0.76.... left with <em>a</em>=0.76-12<em>r</em>/7 so the apples cost $0.76 each to get the cost of the oranges (<em>r</em>) you do the same as you did to get the cost of the apples.
Also on the other equation for 8 oranges and 5 apples you might get different answers but you will see that they are close/similar to the same answers as you will get for the last equations.
<span>Let x= measure of sides that have common length then from "the third side measures 5m less than twice the common length." 2x-5= third side . Because they gave us the perimeter we have: 11 = x+x+2x-5</span><span>11 = 4x-5 16 = 4x 4 m = x . third side: 2x- 5 =2(4)-5 = 8-5= 3m</span> Length answers: 4m, 4m, and 3m
