What is an easy way to add a subtract rationals?

1 answer:

8 0

If the two rational expressions that you want to add or subtract have the same denominator you just add/subtract the numerators which each other. When the denominators are not the same in all expressions that you want to add or subtract as in the example below you have to find a common denominator.

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What is at answer for this addition problem 3/2+4/5=

Anon25 [30]

Answer:2 3/10

Step-by-step explanation:

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If f(x) is 4x-3 what is (f^-1of) (10)

muminat

$f(x)=4x-3\\
y=4x-3\\
4x=y+3\\
x=\frac{1}{4}y+\frac{3}{4}\\
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Masja [62]

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3 years ago

Graph the equations to solve the system. <br> y=3x+3<br> 1/3y+x+1

riadik2000 [5.3K]

Given equation is y=3x+3 and $\frac{1}{3}y=x+1$

Let's simplify the 2nd equation $\frac{1}{3}y=x+1$ before we can start graph so that calculation will be easy

$\frac{1}{3}y=x+1$

multiply both sides by 3 to cancel out fractions

$3*\frac{1}{3}y=3*x+3*1$

y=3x+3

which is exactly same as the first equation so graph of both will be exactly same and solution will be infinitely many solutions.

y=3x+3 has y-intercept 3 so first point will be (0,3). Slope is 3 so rise 3 unit up then 1 right and graph the new point.

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There are 3 questions and 4 choices.
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4 years ago