Question

(645+120)-а(563+284)-142

Answer 1

(645 + 120) - a(563 + 284) - 142 = 765 - a × 847 - 142 = 765 - 847a - 142 = 623 - 847a

Answer 2

First, let's simplify the expression inside the parentheses: 563+284 = 847 645+120 = 765

Now, we can substitute those values into the larger expression:

(765) - a(847) - 142

We can simplify this further by distributing the "a" term:

765 - 847a - 142

Combining like terms, we get:

623 - 847a

So the final simplified expression is:

623 - 847a