Question

解方程,7个3x+6=4x+4 x=5=25-8x 7+2x=19-4x 8x-3-3x=4x+1 (x+0.9)=(x

Answer 1

3x+6=4x+4

4x-3x=4-6

x=-2

x=5=25-8x

x+8x=25+5

9x=30

x=10/3

7+2x=19-4x

2x+4x=17-7

6x=10

x=5/3

8x-3-3x=4x+1

5x-4x=1+3

x=4

15-(5.5-x)*6=2x

15-33+6x=2x

6x-2x=33-15

4x=18

x=9/2

(5.3x-5)/7=x-8

5.3x-5=(x-8)*7

5.3x-5=7x-56

7x-5.3x=56+5

1.7x=61

x=610/17