Վարժ.943
ա) x + 26+10 = 57
x = 57 — 26 — 10
x = 21
բ) 48 — x = 30 = 6
-x = 60 — 48 — 30
-x = 18
x = -18
Վարժ.942
ա) x + 30 = 95
x = 95 — 30
x = 65
բ) x — 27 = 323
x = 323 + 27
x = 350
Վարժ.943
ա) x + 26+10 = 57
x = 57 — 26 — 10
x = 21
բ) 48 — x = 30 = 6
-x = 60 — 48 — 30
-x = 18
x = -18
Վարժ.942
ա) x + 30 = 95
x = 95 — 30
x = 65
բ) x — 27 = 323
x = 323 + 27
x = 350