Question

a)426-(460-10xa)=366

c) [(a+54)x4+6]x4-184=800

d) 1100-[(512-144:a)x2]-171=1
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Answer 1

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Answer 2

a)460-10a=426-366
460-10a=60
10a=460-60
10a=400
a=400÷10
a=40

c)[(a+54)×4+6]×4=800+184=984
(a+54)×4+6=984÷4=246
(a+54)×4=246-6=240
a+54=240÷4=60
a=60-54
a=6

d)1100-[(512-144÷a)×2]=171+1=172
(512-144÷a)×2=1100-172=928
512-144÷a=928÷2=464
144÷a=512-464=46
a=144÷46
a=3,__


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