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To simplify the expression, combine like terms. Like terms are terms that contain the same variables raised to the same power. Here, the like terms are −34r and −56r, which are both coefficients of r, and the constants 3 and −6.
First, simplify the r terms by adding them together:
−34r + (−56r) = −34r − 56r = −90r
Next, combine the constant terms:
3 + (−6) = 3 − 6 = −3
Now that you have combined the like terms, the simplified expression is:
−90r − 3
That's the simplified form of the original expression.