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HACTEHA [7]
3 years ago
13

Solve 2(x-1) =4 xxxxxx

Mathematics
1 answer:
sineoko [7]3 years ago
4 0
2(x-1)=4
2x-2=4
2x=6
x=3
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PLEASE HELP ME ASP! Brainlist and 25 points!
Bezzdna [24]

Answer:

Answer is in the explanation

Step-by-step explanation:

I don't know exactly word from word what your choices look like...

but I can describe per each box what happened in my own words:

First box:  They multiply first equation by 3 and the second equation by 2 to obtain the equations in that first box.

Second box: They subtracted the two equations in the first box to obtain 1x+0y=2 which means 1x=2 or x=2 (this is called solving a system by elimination

Third box: They used their first original equation (before the multiplication manipulation) and plug in the value they got for x which was 2 giving them 3(2)-2y=10

Fourth box: They simplified the equation 3(2)-2y=10 by performing the multiplication 3(2) giving them 6-2y=10

Fifth box:  They subtracted 6 on both sides giving them -2y=4

Sixth box:  They divided both sides by -2 giving them y=-2

I will summarize then what I wrote above:

1st box: Multiplication Property of Equality

2nd box: Elimination

3rd box: Substitution (plug in)

4th box: Simplifying

5th box:  Subtraction Property of Equality

6th box: Division Property of Equality

4 0
3 years ago
Maria says if I multiply the current temperature by 4 and then subtract 40 the results is the same as 3 times the current temper
astra-53 [7]

Answer:

No, Richard is incorrect, the current temperature is 40 degrees.

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4x-40=3x

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It means you will make $0.75 per average game.

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