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3 years ago

11

Help me pls the questions are here

1 answer:

andreyandreev [35.5K]3 years ago

6 0

3x + 7 = -x - 1
3x + 7 + = -1
4x + 7 = -1
4x = -1 - 7
4x = -8
x = -2

1 - 2x + 5 = 4x - 3
-2x + 6 = 4x - 3
6 = 4x - 3 + 2x
6 = 6x - 3
6 + 3 = 6x
9 = 6x
x = 6/9
x = 2/3

i helped you with the first two questions so you can see how you can solve it.

hope this helps, God bless!

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Answer:

Step-by-step explanation:

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3 years ago

Julio bought 4 pencils and 3 erasers for $0.37 and David paid $0.33 for 3 pencils and 4 erasers. What is the cost of one pencil?

grigory [225]

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Step-by-step explanation:

let cost of pencil = x

and cost of eraser = y

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Solving both equations to find value of x and y

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$4x+3y=0.37\,\,\,eq(1)\\3x+4y=0.33\,\,\,eq(2)$

Multiply eq(1) with 4 and eq(2) with 3 and subtract

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Putting value of x in equation 1:

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Keywords: System of equations

Learn more about system of equations at:

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3 years ago

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Anettt [7]

Answer:

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Required

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