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2007-04-17 08:08:26 · 8 answers · asked by the_pink_dahlia 1 in Science & Mathematics ➔ Mathematics
1/3 + 2/3a = 21/3
1/3 + 2/3 a =7/3 Multiply through by 3
1 +2a + 7
2a = 6
a = 3
Check 1/3 + 2/3 (3) = 2 1/3
1/3 + 2 = 21/3
2007-04-17 08:16:18 · answer #1 · answered by kale_ewart 5 · 1⤊ 0⤋
a=3
2007-04-17 08:13:21 · answer #2 · answered by wrpoop 2 · 1⤊ 1⤋
2 1/3 = 7/3
therefore
1/3 + 2/3a = 7/3
1/3 - 1/3 + 2/3a = 7/3 - 1/3
2/3a = 6/3
2/3a X 3/2 = 6/3 X 3/2
6/6a = 18/6
1a = 3
a=3
.
2007-04-17 08:16:23 · answer #3 · answered by Anonymous · 1⤊ 0⤋
1/3+2/3a=2 1/3
1/3+2/3a=7/3
Multiply both sides by 3:
1+2a=7
1-1+2a=7-1
2a=6
a=3
Check:
1/3+2/3(3)=2 1/3
1/3+6/3=2 1/3
1/3+2=2 1/3
2 1/3=2 1/3
2007-04-17 08:22:15 · answer #4 · answered by Anonymous · 0⤊ 0⤋
1/3 + 2/3a=2 1/3
1/3-1/3+2/3a=2 1/3-1/3
2/3a=2
2/3a(3/2)=2/1(3/2)= 3
a=3
2007-04-17 08:19:16 · answer #5 · answered by Dave aka Spider Monkey 7 · 1⤊ 0⤋
1/3 + 2/3a = 2 1/3
(Step 1: subtract 1/3 from both sides)
2/3a = 2
(Step 2: multiply both sides by 3)
2a = 6
(Step 3: divide both sides by 2)
a = 3
You can combine steps 2 and 3 if you are comfortable doing that algebraically, good luck!
2007-04-17 08:13:34 · answer #6 · answered by dangerthird 2 · 1⤊ 0⤋
1/3 + 2/3a = 2 1/3
2/3a = 2
(3/2)2/3a = (3/2)2
6/6a = 6/2
1a = 3/1
a = 3
2007-04-17 08:17:28 · answer #7 · answered by falcons_fu_09 2 · 1⤊ 0⤋
You start by subtracting the 1/3 from both sides. that gives you 2/3 a = 2. then you multiply both sides by 3/2 to get the a by itself. that gives you 6/2, which equals to 3.
2007-04-17 08:12:55 · answer #8 · answered by questioning13x 1 · 1⤊ 0⤋