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4a - 5b equals 7 4a plus 5b equals 17?

Anonymous

∙ 14y ago

Updated: 9/18/2023

4a - 5b = 7

4a +5b = 17

From the first equation:

4a = 7 + 5b

substitute this value in the second equation:

7 + 5b + 5b = 17

7 + 10b = 17

10b = 10

b = 1

Now,solve for a :

4a - 5(1) = 7

4a = 7 + 5

4a = 12

a = 3

Wiki User

∙ 14y ago

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