You can say
x+y=5
x=5-y
You know the value of x, put it into the next equation.
3(5-y)-7y=19
15-3y-7y=19
15-19 = 10y
-4=10y
-4/10=y
-2/5=y
Put y value back into either equation to find value of x.
x+y=5
x-2/5=5
x=5+2/5
x=27/5
Therefore, x,y = (27/5, -2/5)
Hope I helped :)
Answer: A and C
Explanation: 6766 x 1/4 = 1,691.5, 6766 x 1/2 = 3383
Hope this helps
Answer for #9 : 24,720
Answer for #10 : 145
Answer:
Z = 0.5
please follow up q q uagh
