Answer:
To add or subtract some rational numbers, you have to change the rational numbers so they have a common denominator. When you have a common denominator, you can then go on with the addition or subtraction on the numerator part.
Answer:
x=8
Step-by-step explanation:
8-2=6
8x7=42
(checked)
Answer:
1
Step-by-step explanation:
Multiply -4 with 2x and -7
Then collect like terms
Divide both sides by the co-efficient of x
Answer:
50%
Step-by-step explanation:
since 200 is 100% then 100 is 50%