Question

Х-(21+14)=70
Х+(29-9)=50

Answer 1

х-21-14=70               х+29-9=50
х=70+21+14             х=50-29+9
х=105                       х=30

Answer 2

1)
х-(21+14)=70
х= 21+14
х= 35
х= 70+35
х= 105
--------------------
105-(21+14)=70
2)
х+(29-9)=50
х= 29-9
х= 20
х= 50-20
х= 30
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30+(29-9)=50