Name the property of equality that justifies the statement: if a+b=c, then a=c-b

1 answer:

7 0

1. a = b means a is equal to b.
2. a ≠ b means a does not equal b.Operations1. Addition: If a = b then a + c = b + c.2. Subtraction: If a = b then a – c = b– c.
3. Multiplication: If a = b then ac = bc.
4. Division: If a = b and c ≠ 0 then a/c = b/c.

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1/4 + (-3/4)= -4 1/2 + 2= -8+ (-1 1/8) =

AlekseyPX

1/4+ (-3/4) = -0.5

-4 1/2 +2= -2.5

-8+ (-11/8)= -9.125

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How many solutions exist for the given equation?

NikAS [45]

There is only one solution which is x = -370 to the given equation 0.75(x + 40) = 0.35(x + 20) + 0.35(x + 20) option second is correct.

<h3>What is linear equation?</h3>

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

We have a linear equation in one variable:

0.75(x + 40) = 0.35(x + 20) + 0.35(x + 20)

After rearranging and simplification:

$\rm 0.75\left(x+40\right)=0.7\left(x+20\right)$