Răspuns:
3.
8,2
a+b=8+2=10
a-b=8-2=6
axb=8x2=16
a:b=8:2=4
-
9,3
a+b=9+3=12
a-b=9-3=6
axb=9x3=27
a:b=9:3=3
-
b=4
axb=48=>>ax4=48=>>a=48:4=12=>>a=12
a+b=12+4=16
a-b=12-4=8
axb=12x4=48
a:b=12:4=3
-
b=5
a:b=2
a:5=2=>>a=2x5=10=>>a=10
a+b=10+5=15
a-b=10-5=5
axb=10x5=50
a:b=10:5=2
-
a=20
a-b=15=>>20-b=15=>>b=20-15=5=>>b=5
a+b=20+5=25
axb=20x5=100
a:b=20:5=4
-
b=3
a:b=12
a:3=12=>>a=3x12=36=>>a=36
a+b=36+3=39
a-b=36-3=33
axb=36x3=108
-
b=5
a-b=50
a-5=50=>>a=50+5=55=>>a=55
a+b=55+5=60
axb=55x5=275
a:b=55:5=11
-
a=15
b=5
a+b=15+5=20
a-b=15-5=10
axb=15x5=75
a:b=15:5=3
-
a=96
a+b=102
96+b=102=>>b=102-96=6=>>b=6
a-b=96-6=90
axb=96x6=576
a:b=96:6=16
-
4.
a)4x(5+3)-4x2x4=0
b)(50-20):5+40:10=10
c)42:(3+4)+(7+40)x2=100
5.
24:3=8(caiși)
24+8=32(meri)
8:2=4(vișini)
24+8+32+4=36+32=68
Sper că te-am ajutat!
