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120x+30
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120x+30
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80x-\left(-40x\right)-\left(-30\right)
To find the opposite of -40x-30, find the opposite of each term.
80x+40x-\left(-30\right)
The opposite of -40x is 40x.
80x+40x+30
The opposite of -30 is 30.
120x+30
Combine 80x and 40x to get 120x.
80x-\left(-40x\right)-\left(-30\right)
To find the opposite of -40x-30, find the opposite of each term.
80x+40x-\left(-30\right)
The opposite of -40x is 40x.
80x+40x+30
The opposite of -30 is 30.
120x+30
Combine 80x and 40x to get 120x.
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Limits
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