What is (9r^2+4r-7)+(3r^2-3r) ?

The solution to (9r^2+4r-7)+(3r^2-3r) is 12r^2+r-7

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simplify (9r^2+4r-7)+(3r^2-3r)

simplify

(9 r^{2} + 4 r - 7) + (3 r^{2} - 3 r)

12 r^{2} + r - 7

Solution steps

(9 r^{2} + 4 r - 7) + (3 r^{2} - 3 r)

Simplify

(9 r^{2} + 4 r - 7) + (3 r^{2} - 3 r) : 9 r^{2} + 4 r - 7 + 3 r^{2} - 3 r

= 9 r^{2} + 4 r - 7 + 3 r^{2} - 3 r

Group like terms

= 9 r^{2} + 3 r^{2} + 4 r - 3 r - 7

Add similar elements:

9 r^{2} + 3 r^{2} = 12 r^{2}

= 12 r^{2} + 4 r - 3 r - 7

Add similar elements:

4 r - 3 r = r

= 12 r^{2} + r - 7

\frac{1}{4} x y (4 x y)^{3}

\frac{2}{4 ^{- 2}}

\frac{1}{sin ( x ) tan ( x )}

k^{3} - 8

5 - ∣ - 4 + 1 ∣

What is (9r^2+4r-7)+(3r^2-3r) ?
The solution to (9r^2+4r-7)+(3r^2-3r) is 12r^2+r-7