A=134-{150:50-[120:4+25-(11,3+18,7)]}
=134-{150:50-[120:4+25-30]}
=134-{150:50-[30+25-30]}
=134-{150:50-[30-30+25]}
=134-{150:50-[0+25]}
=134-{150:50-25}
=134-{30-25}
=134-5
=129
B=(102+112+122):(132+142)
= [ \((10+11+12)^2\) ]: \([(13+14)^2]\)
= \(33^2\): \(27^2\)