How do you solve 2/10=4/(a-3)?

2 Answers
Nov 5, 2017

a=23

Explanation:

Multiplying both sides by a-3,
2/10 (a-3) =4

Distributing 2/10,
2/10 a - 6/10 = 4
2/10 a = 4 + 6/10
2/10 a = 23/5

Dividing both sides by 2/10,
a=23

Nov 5, 2017

23

Explanation:

2/10=4/(a-3)

Multiply both sides by 10 to eliminate the fraction on the left portion

2=40/(a-3)

Then Multiple both sides by a-3 to eliminate the fraction on the right portion

2(a-3)=40

Distribute 2

2a-6=40

Transpose -6 to the right side

2a=40+6

2a=46

a=23