Solve the simultaneous equation2x-y=8x+y=7SHOW ALL WORKING OUT PLEASE. THANKS
1 answer:
2x-y=8...(1)
x+y=7....(2)
from (2)
y=7-x....(3)
put (3) into (1)
2x-(7-x)=8
2x-7+x=8
2x+x=8+7
3x=15
x=5.....(4)
put (4) into (2)
x+y=7
5+y=7
y=7-5
y=2
Hope it helps c:
You might be interested in
Does this mean how to write it? If so, then it is written:
X= the number
(See picture)
D. Clustering is a short term saying data points/value!!
Answer:
6ft by 8ft
Step-by-step explanation:
1/4 inch = 1 ft
1 1/2 inches has six 1/4 inches
6 times 1 = 6ft
2 inches has eight 1/4 inches
8 times 1 - 8 ft
so its 6ft by 8ft
I believe the answer is b
