Answer:
x =
Step-by-step explanation:
Given
+ = 1
Multiply through by ab to clear the fractions
bx + ax = ab ← factor out x from each term on the left side
x(b + a) = ab ← divide both sides by (b + a)
x =
Answer:
250
Step-by-step explanation:
divide 1000 by .4
Answer:
7 kg
Step-by-step explanation:
16000g = 16kg
9000g = 9kg
16 - 9 = 7kg