bài 1
151-291: 288+12.3
= 151 - 23 + 1 . 3
= 151 - 8 + 3
= 143 + 3
= 146
238:236+51.32-72
= 24 + 5 . 9 - 49
= 16 + 45 - 49
= 61 - 49
= 12
59.73-302+27.59
= 59 . (73 + 27) - 302
= 59 . 100 - 302
= 5900 - 900
= 5000
\(151-2^{91}:2^{88}+1^2.3\)
\(=151-2^3+1.3\)
\(=151-8+3\)
\(=143+3\)
\(=146\)
\(2^{38}:2^{36}+5^1.3^2-7^2\)
\(2^2+5.9-49\)
\(4+45-49\)
\(49-49\)
\(=0\)
151-291:288+12.3
=151-23+1.3
=151-8+3
=146
238:236+51.32-72
=22+5.9-49
=4+45-49
=49-49
=0
59.73-302+27.59
=59.(73+27)-900
=59.100-900
=5900-900
=5000
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