Question

1) 8×( х +4 ) + 28=100 2) (25 -у) +54 =70

Answer 1

8×(х+4)+28=100
100-28=72
72:8=9
х=9-4
х=5
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8×(5+4)+28=100
100=100

(25-у)+54=70
70-54=16
у=25-16
у=9
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(25-9)+54=70
70=70