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tiny-mole [99]
3 years ago
12

How can you solve 3(x + 2)=9 without distributing the 3?

Mathematics
1 answer:
Olin [163]3 years ago
8 0

Answer:

x=1

Step-by-step explanation:

You can divide by 3 on both sides instead of distributing.

x+2=9÷3

x+2=3

x=3-2

x=1

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3 years ago
Solve the system of linear equations by substitution 12x+y=−4 y=2x+16
ki77a [65]

Answer:

Your solution is (-10/7, 92/7)

Step-by-step explanation:

12x + y = -4

y = 2x + 16

To use substitution, we want to plug one variable's equation into the other equation.

We can see that y is already solved for us. Plug y into the first equation.

12x + y = -4

12x + (2x + 16) = -4

Combine like terms.

14x + 16 = -4

Subtract 16 from both sides.

14x = -20

Divide both sides by 14.

x = -20/14

x = -10/7

Now that we know x, we will plug it into one of the other equations.

y = 2x + 16

y = 2(-10/7) + 16

Multiply.

y = -20/7 + 16

Add.

y = -20/7 + 112/7

y = 92/7

Your solution is (-10/7, 92/7)

Hope this helps!

8 0
2 years ago
Solve x^2 x=0.factorise.
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3 years ago
I need help with this paper
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What grade is this?..

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3 years ago
Read 2 more answers
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