keeping in mind that standard form for a linear equation means
• all coefficients must be integers, no fractions
• only the constant on the right-hand-side
• all variables on the left-hand-side, sorted
• "x" must not have a negative coefficient


X + y= 55
x - y= 9
y = 23
x = 32
the numbers are 23 and 32
Answer: 1.
<----(answer for 7 x 10 - 8)
2.
<---- (answer for 2 x 10-8)
Step-by-step explanation:




1) property of distribution: 30 = -30n - 30
2) inverse property of addition: 60 = -30n
3) inverse property of multiplication: -2 = n
step 2: subtract 30 from both sides
step 3: divide -30 from both sides
Taking the reciprocal of a number means switching it the other way around.
The reciprocal of 5 is 1/5 .
The ratio will be 5:1