Question

⁵/⁹ (5,4p-1⅘m) -6,4 (-⅜p+2,5m) если p=-10, т=0,1 ( )

Answer 1

-59*(5,4р-1 45m)-6,4*(-38p+2,5m)=-59*275p-59*(-95m)-325*(-38p)-6,4*2,5m=-3p+m+125p-16m=-3p+2,4p+m-16m=-0,6p-15m
p=-10 m=0,1
-0,6*(-10)-15*0,1=6-1,5=4,5

Answer 2

5/9•(5,4р - 1 4/5 • m) - 6,4•(-3/8 • p + 2,5m) =
= 5,4p - 17m

1) 5/9 • (5,4p - 1 4/5 • m) =
= 5/9 • (54/10 • p - 9/5 • m) =
= 5/9 • 54/10 • p - 5/9 • 9/5 • m =
= 3p - m

2) 6,4 • (-3/8 • p + 2,5m) =
= 64/10 • (-3/8 • p + 25/10 • m) =
= 64/10 • (-3/8) • p + 64/10 • 25/10 • m =
= -24/10 • p + 1600/100 • m =
= -2,4p + 16m

3) 3p - m - (-2,4p + 16m) =
= 3p - m + 2,4p - 16 m = 5,4p - 17m

4) При p = -10; m = 0,1:
5,4p - 17m = 5,4 • (-10) - 17 • 0,1 =
= -54 - 1,7 = -55,7

ответ: -55,7.