1) 80х - 540 = 18080х = 180 + 54080х = 720х = 720 / 80х = 9
2) 150 - 630 / х = 60150 - 630 / х = 60630 / х = 150 - 60630 / х = 90х = 630 / 90х = 7
3) (260 - х) / 6 = 30260 - х = 30 * 6260 - х = 180х = 260 - 180х = 80
4) (х / 7) 50 - 75 = 17550х / 7 - 75 = 17550х / 7 = 175 + 7550х / 7 = 25050х = 250 750х = 1750х = 1750 / 50х = 35
5) 360 / (8х + 7х) = 6360 / 15х = 615х = 360 / 615х = 60х = 60 / 15х = 4
Ответ:1) х = 92) х = 73) х = 804) х = 355) х = 4
1) 80х - 540 = 180
80х = 180 + 540
80х = 720
х = 720 / 80
х = 9
2) 150 - 630 / х = 60
150 - 630 / х = 60
630 / х = 150 - 60
630 / х = 90
х = 630 / 90
х = 7
3) (260 - х) / 6 = 30
260 - х = 30 * 6
260 - х = 180
х = 260 - 180
х = 80
4) (х / 7) 50 - 75 = 175
50х / 7 - 75 = 175
50х / 7 = 175 + 75
50х / 7 = 250
50х = 250 7
50х = 1750
х = 1750 / 50
х = 35
5) 360 / (8х + 7х) = 6
360 / 15х = 6
15х = 360 / 6
15х = 60
х = 60 / 15
х = 4
Ответ:
1) х = 9
2) х = 7
3) х = 80
4) х = 35
5) х = 4