Реши уровнения. 310+×=720-120, у-18=980-120, 29-8+b=540. Created by kamran2. matematika-ru

Реши уровнения. 310+×=720-120, у-18=980-120, 29-8+b=540...

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310+x=720-120
x=600-310
x=290

y-18=980-120
y=860+18
y=878

29-8+b=540
b=540-29+8
b=519

1 votes Thanks 1

svetka1574

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310 + Х = 720 -120
310 +Х = 600
Х = 600 - 310
Х =290

у -18 = 980 - 120
у -18 = 860
у = 860 + 18
у = 878

29-8 + b = 540
21 + b = 540
b = 540 -21
b = 519

1 votes Thanks 1

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