How do you work problems with solving equations by multiplying or dividing?

Answer 1

one way i solve them is first i add or subtract whatever was done to the constant+variable(4t). then i solve it. after i have solved it i either divide or multioly depending on the sign. i solve the equation after i finished this. i use the calculator to check my answer

here is an example

54x+72/45=12

54x+72/45-72/45=12-72/45

54x=10.4

54x/54=10.4/54

x~0.2

~ this symbol means about

i dont get it,it post to show something like this

x+(-5/4)=-10 1\4?

Answer 2

Word problems require you to slow down, read, and think logically. Many students like to hurry through a test and pick an answer. To work out a word problems, you have to go step-by-step and work toward the end instead of remembering the right answer. Here are some tips: * Write down all information given in the problem. This helps you to look at it more as a math problem and less as a reading assignment. * Work out any math that you know you will need to do. If the question asks for a total, you will need to add; if it asks for a difference, you know you will be subtracting something. If you are not certain what gets added, subtracted, divided, multiplied, etc - wait to think it through! * Put the steps in order based on what the problem says. * Think it through - does it make sense for the steps to be in that order, or do you need to read the problem again? * Work out the final math problem for your solution. * Double-check your math! Example: James has 25 cents more than Tiffany, but 15 cents less than Andrea. If Tiffany has 10 cents, how much money do James and Andrea have? # Information: James = Tiffany + 25; James = Andrea - 15 # You know how much money Tiffany has - you will need to add 25 cents to that and find how much money James has, then add 15 cents to James' money to find Andrea's # It makes sense to start with Tiffany, because you are told how much money she has. You can use that to figure out how much money James has, and can use James' money to figure out Andrea's. # 10 + 25= 35; James has 35 cents; 35 + 15 = 50; Andrea has 50 cents # Double-check: James has 25 cents more than Tiffany - he has 35 cents and it is 25 cents more than 10 cents - but he has 15 cents less than Andrea - he has 35 cents and it is 15 cents less than 50 cents