Question

Answer 1

a: \(10^2-7\left(x-5\right)=29\cdot2\)

=>\(100-7\left(x-5\right)=58\)

=>7*(x-5)=100-58=42

=>x-5=6

=>x=6+5=11(nhận)

b: 124+(118-x)=217

=>118-x=217-124=93

=>x=118-93=25

Answer 2

a,10² - 7(x - 5) = 29.2

=> 100 - 7(x - 5) = 58

=> 7(x - 5) = 42 

=> x - 5 = 6

=> x = 11

b, 124 + (118 - x) = 217

=. 118 - x = 93

=> x = 25

Answer 3

a: 

=>

=>7*(x-5)=100-58=42

=>x-5=6

=>x=6+5=11(nhận)

b: 124+(118-x)=217

=>118-x=217-124=93

=>x=118-93=25