Szczegółowe wyjaśnienie:
1.) 4x - 3 = 18
4x = 22 | :4
x = 5
2.) 15 : x =
= ==> mnożymy na krzyż
3x = 30 | : 3
x = 10
3.) - 16 = 24
7x =
7x = | : 7
x =
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Szczegółowe wyjaśnienie:
1.) 4x - 3 = 18
4x = 22 | :4
x = 5
2.) 15 : x =
= ==> mnożymy na krzyż
3x = 30 | : 3
x = 10
3.) - 16 = 24
7x =
7x = | : 7
x =