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63x-120
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63x-120
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60x-105-\left(15-3x\right)
Use the distributive property to multiply 15 by 4x-7.
60x-105-15-\left(-3x\right)
To find the opposite of 15-3x, find the opposite of each term.
60x-105-15+3x
The opposite of -3x is 3x.
60x-120+3x
Subtract 15 from -105 to get -120.
63x-120
Combine 60x and 3x to get 63x.
60x-105-\left(15-3x\right)
Use the distributive property to multiply 15 by 4x-7.
60x-105-15-\left(-3x\right)
To find the opposite of 15-3x, find the opposite of each term.
60x-105-15+3x
The opposite of -3x is 3x.
60x-120+3x
Subtract 15 from -105 to get -120.
63x-120
Combine 60x and 3x to get 63x.
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