Question

Quiero los pasos :v xD
1_.5x-6x+7x-8x+9x-x=
2_.5xy-6xy+7xy-8xy+9xy-xy=
3_.3ab-4bc-5ab+6bc=
4_.3xy+4xy-5xz-6xz-7xy=
5_.3a+4a+5a-3(4a+5)=
6_.-6x+5-3(-2x+4)=
7_.(9y²-x-1)-(8y²-x-1)=
8_.5x(2x²+5x²)-3(-4x²-9x²)=
9_.9x²+5x²-11x²=
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Answer 1

Respuesta:

Explicación paso a paso:

1_. 5x-6x+7x-8x+9x-x= 5x+7x+9x-6x-8x-x = 21x-15x = 6x

2_. 5xy-6xy+7xy-8xy+9xy-xy= 5xy+7xy+9xy-6xy-8xy-xy = 21x-15x = 6x

3_. 3ab-4bc-5ab+6bc= 3ab-5ab-4bc+6bc = -2ab+2bc

4_. 3xy+4xy-5xz-6xz-7xy= 3xy+4xy-7xy-5xz-6xz = 7xy-7xy-11xz = -11xz

5_. 3a+4a+5a-3(4a+5)=12a-3(4a+5) =12a.4a+12a+5-12a-15=48a²+5-15=48a²-10

6_. -6x+5-3(-2x+4)= RPTA:-1 (LO MANDARE EN FOTO)

7_. (9y²-x-1)-(8y²-x-1)= 9y²-x-1-8y²+x+1= y²

8_. 5x(2x²+5x²)-3(-4x²-9x²)= 10x²+25x²+12x²+27x² = 74x²

9_. 9x²+5x²-11x²= 14x²-11x² =  3x²

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