It is known that 5x + 7 = 4. If the value of 5x-2 is required, what deformation should be made? What is the value of 5x-2

It is known that 5x + 7 = 4. If the value of 5x-2 is required, what deformation should be made? What is the value of 5x-2

Two on both sides, seven off,
It becomes 5x-2 = 4-2-7 = - 5