Question

Va rog urgent rezolvati inecuatiile a 8y=16 b 5x+6=31 c 9y=36 d 2x<11 e 7x>14 f x-4>8 g x+3=6 h 2x+6=36 i 4x+8=16

Answer 1

8y=16
y=16÷8=2

5x+6=31
5x=31-6
5x=25
x=25÷5
x=5

9y=36
y=36÷9
y=4

2x <11
x € {1,2,3,4,5}

7x>14
x>14÷7
x>2
x €{3,4,5,6,7...}

x-4>8
x>8+4
x>12
x €{13,14,15,16...}

x+3=6
x=3

2x+6=36
2x=30
x=15

4x+8=16
4x=8
x=2

Answer 2

a. 8y=16
y=16;8
y=2
b. 5x+6=31
5x-31-6
5x=25
x=25:5
x=5
c. 9y=36
y=36:9
y=4
d. 2x∠11
x∠11:2
x∠5.5
e. 7x⊃14
x⊃14:7
x⊃2
f. x-4⊃8
x⊃8+4
x⊃12
g. x+3=6
x=6-3
x=3
h. 2x+6=36
2x=36-6
2x=30
x=30:2
x=15
i. 4x+8=16
4x=16-8
4x=8
x=8:4
x=2