Question

вычислите 1) 78*85-69= 2) 78*(85-69)=

Answer 1

1) 78 • 85 - 69 = 6 561
1) 78 • 85 = 6 630
2) 6 630 - 69 = 6 561

2) 78 • (85 - 69) = 1 248
1) 85 - 69 = 16
2) 78 • 16 = 1 248

Answer 2

1.
$78 times 85 - 69 =6 : 561 \ 1)78 times 85 = 6 : 630 \ 2)6 : 630 - 69 = 6 : 561$

2.
$78 times (85 - 69) =1 : 248 \ 1)85 - 69 = 16 \ 2)78 times 16 = 1 : 248$