Oblicz:
a) -7*(9x-2y)-4(8x+6y)=
b) -(19x-4y)*(-2)-(6x+4y)*5=
c) (14x-21):7-(32x-40):8=
d) -7(-4a-7)-24a=
Proszę o dokładne obliczenia, a nie same wyniki!
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a) -7*(9x-2y)-4(8x+6y)= -63x+14y-32x+24y=-95x+38y
b) -(19x-4y)*(-2)-(6x+4y)*5= 19x-4y*(-2)+6x-4y*5= 19x+8y+6x-20y= 25x-12y
c) (14x-21):7-(32x-40):8=2x-3-4x-5=-2x-8
d) -7(-4a-7)-24a=28a+49-24a=4a+49
-72x-14y-32x-24y=-114x-38y
38x-8y-30x-20y=8x-28y
2x-3-4x+5=-2x+2
28a+49-24a=4a+49