Question

R = -( 3x + 7y ) + (7x - 5y )​

Answer 1

Explicación paso a paso:

R= -(3x+7y)+(7x-5y)

R= -(3(1)+7(1))+7(1)-5(1))

R= -(3+7)+(7-5)

R= -(11)+2

R= -9