Substitution:
6y + 5x = 8
x + 3y = -7
x = -3y + 7
6y + 5(-3y + 7) = 8
6y - 15y + 35 = 8
-9y + 35 = 8
-9y = -27
-y = -3
y = 3
x = -7 + 9
x = 2
y = 3
x = 2
Answer:
for 1 pound =10/22
for 51/ 2 pounds = 10/22x51/2
= 510/ 44
= 11.590kg
Step-by-step explanation:
Answer:
The fourth one is correct
Answer:
let me calculate it
Step-by-step explanation:
and then i will tell you if i can answer it
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