Answer:
7kg:1kg=7:1 itself
Because 7 and 1 has one '1' as a common factor, so they can't be simplified
In step 2 .. because when you multiple by -4 in step 1 , the equation in step 2 will be ( -4y =-16 + 8z)
Answer:
100
Step-by-step explanation:
2:3:5
20:30:50
20 + 30 + 50 = 50 + 50 = 100
ANSWER

EXPLANATION
We want to simplify

The fractions have the same denominator so we write one denominator and add the numerators to obtain,

Regroup in the denominator to get,

This simplifies to;