Question

datimi si mie 10 ecuatii de clasa a6

Answer 1

1)2x+6=12+8
2x=12+8-6
2x=14
x=14:2
x=7

2)5x+3=48
5x=48-3
5x=45
x=9

3)4+5x=24
5x=24-4
x=20:5=x=4

4)65-3x=20
65-20=3x
45=3x
x=15

5)181-9x=100
181-100=9x
81=9x
x=9

6)34-2x=2
34-2=2x
32=2x
x=16

7)15+3×2x=33
15+6x=33
6x=33-15
6x=18
x=3

8)2x+4:2x=8
2x+2x=8
4x=8
x=2

9)5x+3×7x=63
5x+21x=63
26x=63
x=32

10)7x-3x+10=34
4x=34-10
4x=24
x=6