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2 years ago

To solve m + 9 = 45, should you add or subtract 9 from both sides of the equation

Mathematics

2 answers:

Lena [83]2 years ago

8 0

Answer:

subtract 9 from both sides

Step-by-step explanation:

m + 9 = 45 ( subtract 9 from both sides )

m = 36

Anastasy [175]2 years ago

6 0

Answer:

Subtract

Step-by-step explanation:

You should subtract since the equation says to add.

You basically do the opposite of what it says.

For example, if it was m - 9 = 45 you would add 9 on both sides, but in this case, you would subtract since its m + 9 = 45

m + 9 = 45

subtract nine by 9 and 45:

m = 36

36 + 9 = 45

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Solve: 7 = x + 12 A) -19 B) -5 C) 4 D) 5

DaniilM [7]

Hello, there! :)

Answer:

x=-5

B. -5

*The answer must have a negative sign.*

Step-by-step explanation:

Definition of subtraction property of equality.

Subtraction property of equality is subtracting the same number from both sides of an equation does not change the equation.

$a-c=b-c$

First, you had to switch sides.

$x+12=7$

Then, you subtract by 12 from both sides of an equation.

$x+12-12=7-12$

And finally, simplify or solve.

$7-12=-5$

$x=-5$

Hope this helps!

Thanks!

-Charlie

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