Question

(3x(70-x)+5):2=46 kím mình voii

Answer 1

(3x(70-x)+5):2=46

3x(70-x)+5 =46x2

3x(70-x)+5 =92

3x(70-x) =92-5

3x(70-x) =87

70-x =87:3

70-x =29

x =70-29

x =41

Answer 2

\(\left\lbrack3\cdot\left(70-x\right)+5\right\rbrack:2=46\)

\(3\cdot\left(70-x\right)+5=46\cdot2\)

\(3\cdot\left(70-x\right)+5=92\)

\(3\cdot\left(70-x\right)=92-5\)

\(3\cdot\left(70-x\right)=87\)

\(70-x=87:3\)

\(70-x=29\)

\(x=70-29\)

\(x=41\)

vậy x = 41