Решите пжжжжжж 13х+4х=408 47х-15х=2144

Question

Решите пжжжжжж 13х+4х=408 47х-15х=2144

Answer 1

13х+4х=408
17x=408
x=24
47х-15х=2144
32x=2144
x=67

Answer 2

13х+4х=408
17х=408
х=408÷17
х=24

47х-15х=2144
32х=2144
х=2144÷32
х=67