# Polynomials and Rational Expressions Question

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## Grade 9 Polynomials and Rational Expressions CCSS: HSA-REI.A.1

[math] 3x - 2 = 10 - x[/math]

Step 1: | [math] 3x-2+x [/math] | [math]= \ \ 10-x+x[/math] |

Step 2: | [math]4x-2[/math] | [math]= \ \ 10 [/math] |

Step 3: | [math] 4x-2+2 [/math] | [math]= \ \ 10+2 [/math] |

Step 4: | [math]4x[/math] | [math]= \ \ 12 [/math] |

Step 5: | [math](4x)/4[/math] | [math]= \ \ 12 [/math] |

Step 6: | [math]x[/math] | [math]= \ \ 12 [/math] |

- It is correct.
- Step 1 is incorrect because you have to start with getting rid of the -2.
- Step 1 is incorrect because you should divide by 3 on both sides.
- Step 5 is incorrect because you have to divide by 4 on both sides.