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Free_Kalibri [48]

3 years ago

15

I need to know how to solve these

1 answer:

My name is Ann [436]3 years ago

4 0

1. make an equation
4x+7(20) = 5(x+20)
2. multiply the numbers and distribute 5 through the parenthesis
4x+140 = 5x+100
3. move variables to the left side and change its sign and move constant to the right side and change its sign
4x-5x = 100-140
4. collect the like terms and calculate the difference
-x = -40
5. change the signs on both sides of the equation
x = 40
he needs to use 40 pounds of the cheaper coffee.
hope this helped!

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Step-by-step explanation:

Given that L, M, N are collinear,

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To calculate the numerical length of MN, we need to find the value of x.

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plug in the value of x

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