Toán Lớp 7: 5 x 135 x 7 + 35 x 139 – 7 x 870
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Toán Lớp 7: 5 x 135 x 7 + 35 x 139 – 7 x 870
Comments ( 2 )
$\text{5 ⋅ 1 3 5 ⋅ 7 + 3 5 ⋅ 1 3 9 − 7 ⋅ 8 7 0}$
$\text{=4 7 2 5 + 3 5 ⋅ 1 3 9 − 7 ⋅ 8 7 0}$
$\text{=4725+4865−7⋅870}$
$\text{=4 7 2 5 + 4 8 6 5 − 6 0 9 0}$
$\text{=3 5 0 0}$