(1)2.6+3.4x=23 (2)6.3x-x=15.9 (3)4(x-2.05)=7.8 (4)4.98-2.3x=1.3 (5)17.6x-4×0.6=

(1)2.6+3.4x=23 (2)6.3x-x=15.9 (3)4(x-2.05)=7.8 (4)4.98-2.3x=1.3 (5)17.6x-4×0.6=6.4 (6)15.3x-12.8x=10

(1)2.6+3.4x=23
                3.4x=20.4
                    x=6
(2)6.3x-x=15.9
            5.3x=15.9
                 x=3
(3)4(x-2.05)=7.8
                 x-2.05=1.95
                        x= 4
(4)4.98-2.3x=1.3
                2.3x=3.68
                     x=1.6
 
(5)17.6x-4×0.6=6.4
              17.6x-2.4=6.4
                    17.6x=8.8
                           x=0.5
(6)15.3x-12.8x=10
                    2.5x=10
                        x= 4
 

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