Решите пжл уравнения 3 кл)

Question

Решите пжл уравнения 3 кл)

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Answer 1

12*х+51=99
12*х=99-51
12*х=48
Х=48\12
Х=4

100-х*14=58
Х*14=100-58
Х*14=42
Х=42/14
Х=3

Answer 2

12*x+51=99                                                                                         12*x=99-51

12*x=48

x=48:12

x=4