(7x+8y)-(5x-2y) при x= -3/4,y=0,025

Question

(7x+8y)-(5x-2y) при x= -3/4,y=0,025

Answer 1

7х+8у-5х+2у
2х+10у
2*(-3/4)+10*0.025
0,25+(-3/2)
0,25+(-1 1/2)
0,25+(-1,5)
от:-1,25