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3 years ago

5/7x-4=21 solve folve for x

Mathematics

2 answers:

Aleksandr-060686 [28]3 years ago

6 0

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

7*x-4-(21)=0

Solve : 7x-25 = 0

Add 25 to both sides of the equation :

7x = 25

Divide both sides of the equation by 7:

x = 25/7 = 3.571

Marysya12 [62]3 years ago

5 0

Answer:

Step-by-step explanation:

1. 5/7x - 4 = 21

2. Add 4 on both sides --> 5/7x = 25

3. Divide by 5/7 on each side

4. on the left it cancels out and you are left with ---> x = 35

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Step-by-step explanation:

we know that

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