Question

resolva as equações do 1° grau. 2 (7x - 52 ) =- 3 ( 3x - 42 )

Answer 1

Resolvendo:

$\mathsf{2\cdot \left(7x-52\right)=-\:3\cdot \left(\:3x-42\right)}\\\\\mathsf{14x-104=-\:9x+126}\\\\\mathsf{14x+9x=126+104}\\\\\mathsf{23x=230}\\\\\mathsf{x=\dfrac{230}{23}}\\\\\boxed{\mathsf{x=10}}\: \: \checkmark$

Answer 2

-3 (3x - 42) = 2 (7x - 52)

- 9x + 126 = 14x - 104

- 9x - 14x = - 104 - 126

- 23x = - 230

x= - 230/-23

x= 10