Solve for r
r=20
Solve for x
x\in \mathrm{R}
r=20
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6x^{2}+x-15+r=6x^{2}+x+5
Use the distributive property to multiply 2x-3 by 3x+5 and combine like terms.
x-15+r=6x^{2}+x+5-6x^{2}
Subtract 6x^{2} from both sides.
x-15+r=x+5
Combine 6x^{2} and -6x^{2} to get 0.
-15+r=x+5-x
Subtract x from both sides.
-15+r=5
Combine x and -x to get 0.
r=5+15
Add 15 to both sides.
r=20
Add 5 and 15 to get 20.
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