How do you solve 2/10=4/(a-3)210=4a3?

2 Answers
Nov 5, 2017

a=23a=23

Explanation:

Multiplying both sides by a-3a3,
2/10 (a-3) =4210(a3)=4

Distributing 2/10210,
2/10 a - 6/10 = 4210a610=4
2/10 a = 4 + 6/10210a=4+610
2/10 a = 23/5210a=235

Dividing both sides by 2/10210,
a=23a=23

Nov 5, 2017

23

Explanation:

2/10210=4/(a-3)4a3

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

22=40/(a-3)40a3

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

2(a-3)2(a3)=40

Distribute 2

2a-6=40

Transpose -6 to the right side

2a=40+6

2a=46

a=23