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Earn +20 ptsQ: What is 25a plus 5b -13?
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How do you solve similtaneously -5a plus b equals 2 and -a -5b equals 0?
-5a + b = 2 AND -a - 5b = 0 -5a + b = 2 b = 2 + 5a *using above -a - 5b = 0 -a - 5(2 + 5a) = 0 -a - 10 - 25a = 0 -26a = 10 a = 10/-26 *using 'a' value 5a + b = 2 5(10/-26) + b = 2 -25/13 -2 = -b b = 51/13 Therefore a = 10/-26 b = 51/13
What are 2 equivalent expressions for 5b plus 5b?
5b + 5b = 2 x 5b
What is 5b plus 11 minus 2b?
5b + 11 - 2b = 3b + 11
What is 5b plus 8b?
13b !
What is 5b equals 21 plus 4b?
5b = 21 + 4b 5b - 4b = 21 + 4b - 4b b = 21
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