Question

26x3+15x3+4x2-3x2

Answer 1

\(26\times3+15\times3+4\times2-3\times2\)

\(=3\times\left(26+15\right)+2\times\left(4-3\right)\)

\(=3\times41+2\times1\)

\(=123+2\)

\(=125\)

Answer 2

26\(\times\)3 + 15\(\times\)3 + 4\(\times\)2 - 3\(\times\)2 

= (26\(\times\)3 + 14\(\times\)3) + 3 + (4\(\times\)2 - 3\(\times\)2)

= 3\(\times\)(26 +14) + 3 + 2\(\times\)(4 - 3)

= 3 \(\times\)40 + 3 + 2

= 120 + 5

= 125 

Answer 3

$26\times 3+15\times 3+4\times 2-3\times 2$

$=3\times \left(26+15\right)+2\times \left(4-3\right)$

$=3\times 41+2\times 1$

$=123+2$

$=125$

Answer 4

$26\times 3+15\times 3+4\times 2-3\times 2$

$=3\times \left(26+15\right)+2\times \left(4-3\right)$

$=3\times 41+2\times 1$

$=123+2$

$=125$

$Học\; tốt$