0.7x+3.4x=117.26 (5.6+x)÷7=3.9 7(x-2.5)=25.
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0.7x+3.4x=117.26(5.6+x)÷7=3.97(x-2.5)=25.0.7x+3.4x=117.26(5.6+x)÷7=3.97(x-2.5)=25.0.7x+3.4x=117.26(5
0.7x+3.4x=117.26 (5.6+x)÷7=3.9 7(x-2.5)=25.
0.7x+3.4x=117.26 (5.6+x)÷7=3.9 7(x-2.5)=25.
0.7x+3.4x=117.26 (5.6+x)÷7=3.9 7(x-2.5)=25.
7x+3.4x=117.26
10.4x=117.26
x=11.275
(5.6+x)÷7=3.9
5.6+x=3.9*7
x=21.7
3. 7(x-2.5)=25
7x-17=25
7x=42
x=6 ㊣㊪答题
0.7x+3.4x=117.26 4.1x=117.26 x=117.26 ÷4.1 x=28.6 (5.6+x)÷7=3.9 5.6+x=3.9×7 x=27.3-5.6 x=21.7 7(x-2.5)=25 x-2.5=25/7 x=25/7+2.5 x=50/14+35/14 x=85/14 (14分之85)