Question

4)
a)[36:(24-m)+29]:5=7
b) [(m+26:2)x3+4] x5=230
c) [(n:5-4) : 3]-36:3=14

Answer 1

a)[36:(24-m)+29]÷5=7

36:(24-m)+29=7×5

36:(24-m)+29=35

36:(24-m)=35-29

36:(24-m)=6

24-m=36÷6

24m=6

m=24-6

m=18

b)[(m+26÷2)×3+4]×5=230

[(m+26÷2)×3+4]=230÷5

[(m+26÷2)×3+4]=46

(m+26÷2)×3=46-4

(m+26÷2)×3=42

(m+26÷2)=42÷3

(m+26÷2)=14

m+26=14×2

m+26=28

m=28-26

m=2

c)[(n:5-4)÷3]-36÷3=14

[(n÷5-4)÷3]-36=14×3

[(n÷5-4)÷3]-36=42

[(n÷5-4)÷3]=42+36

[(n÷5-4)÷3]=78

(n÷5-4)=78×3

(n÷5-4)=234

n÷5=234+4

n÷5=238

n=238×5

n=1190