7(x-4.2)+5x=4.4

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7(x-4.2)+5x=4.47(x-4.2)+5x=4.47(x-4.2)+5x=4.47x一29.4十5x=4.412x=33.8x≈2.927X-29.4+5x=4.412x=33.8x约等于2

7(x-4.2)+5x=4.4
7(x-4.2)+5x=4.4

7(x-4.2)+5x=4.4
7x一29.4十5x=4.4
12x=33.8
x≈2.92

7X-29.4+5x=4.4
12x=33.8
x约等于2.8167望采纳

7(x-4.2)+5x=4.4
7x-29.4+5x=4.4
12x=33.8
x=169/6