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gonzalesrosalinda66
05.05.2020 •
Mathematics
Simplify the expression the best you can:
(9x−4)−(2x−7) =
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Ответ:
7x+3
Step-by-step explanation:
To simpfly, it would help by simply ignoring the variable (x) and just looking at the number before it, solving it like a regular math problem, from left to right.
9(x) - 2(x) = 7(x)
(-4)-(-7) = 3 --> since there's a minus sign in the middle subtracting the two numbers and one on the -7, the -7 becomes a positive 7. A negative times a negative is always positive so, it would technically be -4+7=3.
Put both of these two numbers together and you get your answer,
7x+3.
If you're having trouble with the part I explained the image might help. Read it from left to right. A negative # + a negative # = positive #, as seen by the first row.
Ответ:
y=1/2x+2
Step-by-step explanation:
y=mx+b
the y intercept is 2 therefore b=2
the slope of the line is up 1 over 2 making m= 1/2