if ae= 3x+3 and ec = 5x-15 find ac

how do you find ac
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2 Answers

ac = ae + ec

ac = 3x + 3 + 5x - 15

ac = 8x - 12
by Level 8 User (36.8k points)
Actually JkHenry, If you're trying to find AC, you have to plug in "x." First, set 3x+3 and 5x-15 equal. 5x-15=3x+3. Then, add 15 to both sides and you'll have 5x=3x+18. Now, subtract 3x from both sides, getting this result; 2x=18. Now there's not much to go. Simplify 2x=18 to x=9. Now plug in 9 as "x" to the equations and you should get the same answer for both of them. 5*9=45. 45-15= 30. 3*9=27. 27+3=30. :D
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