Question
Answer
$$6b^3+2-(6b^3+5b)=-5b+2$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}6b^3+2-(6b^3+5b)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}6b^3+2-6b^3-5b \xlongequal{ } \\[1 em] & \xlongequal{ } \cancel{6b^3}+2 -\cancel{6b^3}-5b \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-5b+2\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( 6b^3+5b \right) = -6b^3-5b $$ |
| ② | Combine like terms: $$ \, \color{blue}{ \cancel{6b^3}} \,+2 \, \color{blue}{ -\cancel{6b^3}} \,-5b = -5b+2 $$ |
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