ajutor va rog frumos
DAU COROANA
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a) 3x5+3x2=3x(5+2)=3x7=21
4x10-4x6=4x(10-6)=4x4=16
b)4x2+3x2=2x(4+3)=2x7=14
9x6-4x6=6x(9-4)=6x5=30
c) 8x5+5x2=5x(8+2)=5x10=50
10x7-7x3=7x(10-3)=7x7=49
d)4x5+2x4=4x(5+2)=4x7=28
9x10-7x9=9x(10-7)=9x3=27
e) 2x6+2x5+2x9=2x(6+5+9)=2x20=40
5x10+5x3+7x5=5x(10+3+7)=5x20=100
2x8+8x3+5x8=8x(2+3+5)=8x10=80
f) 3x10-3x4-3x2=3x(10-4-2)=3x4=12
9x20-9x6-7x9=9x(20-6-7)=9x7=63
8x6-3x8-8x2=8x(6-3-2)=8x1=8
g) 10x7+10x2-10x5=10x(7+2-5)=10x4=40
7x8-6x7+7x4=7x(8-6+4)=7x6=42
2x100-75x2+11x2-2x4=2x(100-75+11-4)=2x32=64
4x10-4x6=4x(10-6)=4x4=16
b)4x2+3x2=2x(4+3)=2x7=14
9x6-4x6=6x(9-4)=6x5=30
c) 8x5+5x2=5x(8+2)=5x10=50
10x7-7x3=7x(10-3)=7x7=49
d)4x5+2x4=4x(5+2)=4x7=28
9x10-7x9=9x(10-7)=9x3=27
e) 2x6+2x5+2x9=2x(6+5+9)=2x20=40
5x10+5x3+7x5=5x(10+3+7)=5x20=100
2x8+8x3+5x8=8x(2+3+5)=8x10=80
f) 3x10-3x4-3x2=3x(10-4-2)=3x4=12
9x20-9x6-7x9=9x(20-6-7)=9x7=63
8x6-3x8-8x2=8x(6-3-2)=8x1=8
g) 10x7+10x2-10x5=10x(7+2-5)=10x4=40
7x8-6x7+7x4=7x(8-6+4)=7x6=42
2x100-75x2+11x2-2x4=2x(100-75+11-4)=2x32=64
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