1)25x-7x+2x=402)33x-16x-4x=78

Question

1)25x-7x+2x=40
2)33x-16x-4x=78

Comments

25Х-7Х+2Х=40

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20Х=40

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Х=40:2

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ТО ЕСТЬ Х=40:20

Answer 1

1) 20х=40
    х=2
 2) 13х=78
     х=6

Answer 2

1)25х-7х+2х=40
20х=40
х=40/20
х=2
2)13х=78
х=78/13
х=6