x = 1.5
because
-7x + 3 = -15/2
-14x + 6 = -15 (x2)
-14x + 21 = 0 (+15)
21 = 14x (+14x)
3 = 2x (/7)
1.5 = x
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To divide negative and positive numbers, first, look at the signs (= or -) If there is -__divided by -__, that will equal +___.So, same equal positive... and different equals negative.EX.-9 dvided by +3= -3 (different signs, negative answer)+9 divided by -3 = -3 (different signs, negative answer)+9 divided by +3= +3 (same signs, positive answer)-9 divided by -3= +3 (same signs, positive answer)Something that my teacher taught us to help us remember whether it would be positive or negative was the Love-Hate Theory.Love=PositiveHate=NegativeIf you have a positive number divided by a negative number, that would be Love and Hate, so if you love to hate, than that is basically hating, which is negative. Negative divided by a negative would be hate to hate, which is love, so positive. If you need more help, post something on my message board. Sara Mariepositive divided by a positive=positivepositive divided by negative=negativenegative divided by negative=positive (i know crazy isn't it!)
Well, isn't that a happy little math question! If you have negative 4 and you add 3 more, you end up with negative 1. Just like adding a few extra strokes to a painting can really bring it to life, adding 3 to negative 4 can help you see the beauty of numbers coming together.
I honestly don't know :D but heres something to help you "MULTIPLICATION: minus times minus is plus (negative x negative = positive).....minus times plus is minus (negative x positive = negative).....plus times plus is plus (positive x positive = positive) DIVISION: minus divi minus is plus (negative ÷ negative = positive)......minus divi plus is minus (negative ÷ positive = negative).....plus divi plus is plus (positive ÷ positive = positive)"
i have to finish my algebra 1 homework and i have no idea what the answer is.... help!
you use negative numbers when measuring the temperature when playing golf or jeopardy! hope this helps! The only place negative numbers work is on paper. It is good when you are having trouble to answer a question.When you need help i would use a number line because it saves getting the answer wrong or even use your fingers because getting the answer wrong is more embarrasing than using your hands/fingers or using a number line...lol