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Earn +20 ptsQ: Solve 2a plus 3 equals 11?
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How do you solve -2a plus 5 plus 3a equals 15-21?
depends what 'a' =
How do you solve -2a plus 5 equals 1?
-2a + 5 = 1 -2a = -5 + 1 -2a = -4 a = -4/-2 a = 2
How do you solve b equals 2a plus 11 and a plus b equals 5 by substitution?
b = 2a + 11a + b = 5 which is b = 5 - atherefore2a + 11 = 5 - a (which is b = b)2a + a = - 11 + 53a = - 6a = - 2looking at first equation substitute - 2 for a:b = 2a + 11b = 2*(- 2) + 11b = - 4 +11b = 7to check:a + b = 5- 2 + 7 = 5
A plus a plus a-2a equals?
a + a + a - 2a = 3a - 2a = a
2a plus 5a plus 9a equals?
2a+5a+9a = 16a
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