5x-18.5=0 3.6x7-6x=9.6 3.4x-48=26.8 42x+25x=134 0.8x÷ 9=2.7 4x-4x2.2=11.2

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5x-18.5=0 3.6x7-6x=9.6 3.4x-48=26.8 42x+25x=134 0.8x÷ 9=2.7 4x-4x2.2=11.2
5x-18.5=0 3.6x7-6x=9.6 3.4x-48=26.8 42x+25x=134 0.8x÷ 9=2.7 4x-4x2.2=11.2

5x-18.5=0 3.6x7-6x=9.6 3.4x-48=26.8 42x+25x=134 0.8x÷ 9=2.7 4x-4x2.2=11.2
5x-18.5=0 3.
5x=18.8
x=3.76
6x7-6x=9.6
42-6x=9.6
6x=32.4
x=5.4
3.4x-48=26.8
3.4x=74.8
x=22
42x+25x=134
67x=134
x=2
0.8x÷ 9=2.7
0.8x=24.3
x=30.375
4x-4x2.2=11.2
4x-8.8=11.2
4x=20
x=5