Question

tinh hop ly 42.(x-3)+(x-3).58=-300

Answer 1

` 42.(x-3)+(x-3).58=-300`

`=>(42+58)(x-3)=-300`

`100(x-3)=-300`

`x-3 = -300/100`

`x-3=-3`

`x = -3+3=0`

Vậy `x=0`

Answer 2

x-3. (42+ 58) =-300

x-3. 100= -300

x-3        = -300: 100

x-3        = -3

x           = -3+ 3

x           =0

Vậy x= 0.

Answer 3

\(42\cdot\left(x-3\right)+\left(x-3\right)\cdot58=-300\)

\(\Leftrightarrow\left(x-3\right)\left(42+58\right)=-300\)

\(\Leftrightarrow\left(x-3\right)\cdot100=-300\)

\(\Leftrightarrow x-3=-3\)

\(\Leftrightarrow x=0\)