12a-7b - (4a-21b) = ...

Ahmad had a balance of $46 in his checking account. He made a deposit of $58, and wrote checks for $17 and $30. How much money dose Ahmad have in his account?

Michael finds that 3/5 customers at his grandfather's grocery store use a coupon to simulate the behavior of the next five customers he writes the numbers 1,2,3,4 and five on cards and mixes them up he writes down the 1,2, and 3represent someone

Add or subtract as indicated. reduce to the lowest term. 1 1/3 + 2 1/3

Sophia spent 6; 247 rand on her trip. She exchanged the rand she had left for U. S dollars. The exchange rate was one rand to $0.14. How many U. S dollars did sophia get

How to divide negative exponents

while playing basketball, jada's heart rate goes up to 160 beats per minute. whe jogging her heart beats 25 times in 10 seconds.

What does 12 times a number mean as an expression?

Emma seys that the preduct of a 3-digit number and a 1-digit number will be either a 3 digit number or a 4 digit number. Does Emma's statement make sense

Work out the value of these two questions: 1) 3^2 + 2^3 2) 2^4 - 3^2

What is 5 1/4 divided 2 2/7