Value of expression
X=2, y=-5 and z=3 what is the value of x-2y?
Correct answer:

You need to know the following knowledge to solve this word math problem:
Related math problems and questions:
- Expressions
Expression (3a-7).(3a+7) is identical with: ?
- Marriage sttus
In our city, there are 3/5 of the women married to 2/3 of the men. Find what part of the population is free.
- Linear function
Using one of the following forms x+p=q or px=q write an to represent these problems using x as the unknown variable Larry ran 7 more miles than Barry in a month, if Larry ran 20 miles how many did Barry run? please help its due tomorrow
- RT and ratio
A right triangle whose legs are in a ratio 6:12 has hypotenuse 68 m long. How long are its legs?
- Price increase
A 20 percent price increase meant a 90-crown raise. How many cost a product after?
- Unknown number 24
f we add 20, we get 50% of its triple. What is this unknown number?
- Clothes
Danka and Janka collect clothes. Danka had 9 more than Janka, so she gave her 7. Which now has more cloth and how many?
- Simplify 2
Simplify expression: 5ab-7+3ba-9
- Twelve
Twelve students work on a week forestry brigade. One hundred spruces will receive x CZK, one hundred pine y CZK. How many receive each one students did in one day if they planted a total of 25,000 spruces per week and 30,000 pine trees? Express by express
- Twice of radius
How many times does the surface of a sphere decrease if we reduce its radius twice?
- Interst on savings
The bank offers 1.6% interest. How many euros have to insert at the beginning if we received € 15 on the interest?
- Volume of sphere
How many times does the volume of a sphere increase if its radius increases 2 ×?
- Ethnicity
Share of ethnicity XY is 26%, which is 1/9 more than in the prewar period. What was the share of that ethnicity in the pre-war period?
- A clock
A clock was set right at 6:00 AM. If it gains 3 1/2 minutes per hour, what time will it show at 6:00 PM on the same day? Show your solution
- Raspberries
Dano had 20 raspberries. John had 90% more raspberries than Dano. Determine how many raspberries have Dano and Juraj together.
- Which
Which decimals when subtracted equal 3.89: a - b = 3.89
- VAT on books
The cost of a book in the store is 12.5 euros. How much euros is the VAT of this book? VAT is 10%.