W poniższych przykładach opuść poprawnie nawiasy i zredukuj wyrazy podobne .
a ) - [ ( x-2a )-( x+2a ) ]
b ) kl+l+k-4l+4kl-3k+3l+2k+9kl
c ) 3m+52g-3-( 2m-g ) - ( m-23g-3 )+70g
d ) 33e-[-3e +1-(4e+5)]-4
e) 4a+8b-3-(4a-7b-3)
f) (p+r)-(p-r) - [p-(p+r)]
g) 20-{-[-(3a+2)+(-4a-8)+2]-4a}+8
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a) -[ x-2a -x-2a]=-[-4a]=4a
b)kl+l+k-4l+4kl-3k+3l+2k+9kl=14kl=8l
c ) 3m+52g-3-( 2m-g ) - ( m-23g-3 )+70g=3m+52g-3-2m+g-m+23g+3+70g=146g
d ) 33e-[-3e +1-(4e+5)]-4=33e+3e-1-(-4e-5)-4=33e+3e-1+4e+5=40e+4
e) 4a+8b-3-(4a-7b-3)=4a+8b-3-4a+7b+3=15b
f) (p+r)-(p-r) - [p-(p+r)]=p+r-p+r-p-p-r=-2p+r
g) 20-{-[-(3a+2)+(-4a-8)+2]-4a}+8=20-3a-2-4a-8+2-4a=12-11a
Mam nadzieje ze pomoglam ;]
a ) - [ ( x-2a )-( x+2a ) ] = - (x - 2a - x - 2a) = -(-4a) = 4a
b ) kl+l+k-4l+4kl-3k+3l+2k+9kl = kl + 4kl + 9kl + l - 4l + 3l + k - 3k + 2k = 14kl
c ) 3m+52g-3-( 2m-g ) - ( m-23g-3 )+70g = 3m - 2m - m + 52g + g + 23g + 70g - 3 + 3 = 76g
d ) 33e-[-3e +1-(4e+5)]-4 = 33e - (-3e + 1 - 4e - 5) - 4 = 33e + 3e - 1 + 4e + 5 = 40e + 4
e) 4a+8b-3-(4a-7b-3) = 4a + 8b - 3 - 4a + 7b + 3 = 15b
f) (p+r)-(p-r) - [p-(p+r)] = p + r - p + r - (p - p - r) = 2r + r = 3r
g) 20-{-[-(3a+2)+(-4a-8)+2]-4a}+8 = 20 -[-[-3a - 2 - 4a - 8 + 2] - 4a] + 8 = 20 -[3a + 2 + 4a + 8 - 2 - 4a] + 8 = 20 - 3a - 2 - 4a - 8 + 2 + 4a + 8 = 20 - 3a