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bazaltina [42]
3 years ago
13

How do you this problem?

Mathematics
2 answers:
Hunter-Best [27]3 years ago
4 0

Answer:

8

Step-by-step explanation:

jolli1 [7]3 years ago
4 0

Answer:

x=11

Step-by-step explanation:

7x+13= 90 should be your equation.

when you solve you should have:

7x+13=90 but you want to start to solve so the first step would be to subract 13 from both sides because your adding 13 you wanna do the opposite of that and the opposite of addition is subtraction.

7x=77 now you wanna divide 7 from both sides

x=11

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kotykmax [81]

Step-by-step explanation:

You can solve systems of equations using either substitution or elimination.  For these problems, I recommend elimination.  I'll do the first one as an example.

-3x + 16y = 9

-4x + 8y = 12

Multiply the second equation by -2.

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Add to the first equation (notice the y's cancel out).

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3 0
3 years ago
Solve this quadratic equation.<br> x2 + 5x + 3 = 0
Xelga [282]

Answer:

Step-by-step explanation:

2x+5x+3=0

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   =0  =-3

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I think it is right

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