Упростить(245z+147y-98z):49
(245Ζ+147Υ-98Ζ)÷49 1)245Ζ-98Ζ=147Ζ (147Ζ+147Υ)÷49= 2)147Ζ÷49=3Ζ 3)147Υ÷49=3Υ 3Ζ+3Υ
спасибо,большое