Question

Află numerele necunoscute.
A. 310+198+x=983
123+x-123=519
B. 802-x-215=396
X-140-240=200
C.x-283-175=365
X-497+497=497
Dau coroană​

Answer 1

Răspuns:

a. 310+198+x=983

198+x=983-310

198+x=673

x=673-198

x=475

123+x-123=519

123+x=519+123

123+x=642

x=642-123

x=519

b. 802-x-215=396

802-x=396+215

802-x=611

x=611+801

x=1412

x-140-240=200

x-140=200+240

x-140=440

x=140+440

x=580

c. x-283-175=365

x-283=365+175

x-283=540

x=540+283

x=823

x-497+497=497

x-497=497-497

x-497=0

x= 497