Question

(х-80)÷40=640 (х-80)×40=640 х-80=640÷40 х-80=640×40

Answer 1

1)х-80:40=640
2)х-80*40=640. 3) х=640:40+80
х=640+80*40. х=640+80:40. х=16+80
х=640+3200. х= 640+2. х=96
х=3840 х= 642

4) х=640*40+80
х=25600+80
х=25680