What is 2a-1+8b-12b+7a-12 ?

The solution to 2a-1+8b-12b+7a-12 is 9a-4b-13

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simplify 2a-1+8b-12b+7a-12

simplify

2 a - 1 + 8 b - 12 b + 7 a - 12

9 a - 4 b - 13

Solution steps

2 a - 1 + 8 b - 12 b + 7 a - 12

Add similar elements:

8 b - 12 b = - 4 b

= 2 a - 1 - 4 b + 7 a - 12

Group like terms

= 2 a + 7 a - 4 b - 1 - 12

Add similar elements:

2 a + 7 a = 9 a

= 9 a - 4 b - 1 - 12

Subtract the numbers:

- 1 - 12 = - 13

= 9 a - 4 b - 13

x^{3} - 3 x^{2} - 13 x + 39

- lo g_{10} (0.3)

\frac{4}{9} \div \frac{7}{12}

(7 g + 3) (- g - 3)

\frac{2 ^{2 n + 1} + 4 ^{n - 1} + 1 6 ^{\frac{n}{2}}}{2 ^{2 n - 2}}