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Amazing! Exactly the same question was posted here on WikiAnswers
last September 23. What an incredible coincidence!
8b + 11 - 3b = 2b + 2
That 8b on the left side can be combined with the -3b to make 5b .
5b + 11 = 2b + 2
Subtract 2b from each side:
3b + 11 = 2
Subtract 11 from each side:
3b = -9
Divide each side by 3:
b = -3
(That's the same answer they got last September.)
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4a - 2b plus 6a - 8b?
10a - 10 b
What is equivalent to e equals 8b plus 12n?
8b = e - 12n, possibly.
If 3a plus 2b equals 24 and 4a plus 8b equals 70 how do you solve for a and b using the elimination method?
Two equations, two unknownsFirst, multiply 3a + 2b = 70 by 4. This gives the equation 12a + 8b = 96. Next, subtract 4a + 8b = 70 from this equation. This result gives 8a = 26, which, solving for a, gives a = 3.25.Substitue the value of a into one of the original equations, which will give b = 7.125.Finally check your results by substituting the values of a and b into each equation.Answer:Given two equations 3a + 2b = 24 ------ (1) and 4a + 8b = 70 ------ (2) We have to solve this by using elimination method.Multiply the equation 3a + 2b = 24 by 4 on both the sides.We get 12a + 8b = 96 ---------- (3)Now, subtract the equation (2) from equation (3)12a + 8b = 96 ---------- (3)4a + 8b = 70 ---------- (2)--------------------------------(12a - 4a) + (8b - 8b) = (96 - 70)8a + 0 = 268a = 26a = 26/8a = 13/4 (Or) a = 3.25Substitute the value of a in the equation (2)4a + 8b = 70 ---------- (2)4(13/4) + 8b = 70.13 + 8b = 708b = 70 - 138b = 57b = 57/8 (Or) b = 7.125
6a plus 7b - 4a - 8b equals?
6a + (7b - 4a - 8b) = (6a - 4a) + (7b - 8b) = 2a - b
What is b if 7b plus 16 equals 5b plus 24?
7b + 16 = 5b + 247b - 5b = 24 - 162b = 8b = 4
