Question

206-y=139 (134+x)+583=426 8(x-14)=56

Answer 1

206-y=139

y = 206 - 139

y = 67

(134+x)+583=426

134 + x + 583 = 426

717 + x = 426

x = 426 - 717

x = -291

8(x-14)=56

x - 14 = 56 : 8

x - 14 = 7

x = 7 + 14

x = 21