a, 541 + ( 218 - x ) = 735
<=> 218 - x = 735 - 541
<=> 218 - x = 194
<=> x = 24
b, 5 ( x + 35 ) = 515
<=> x + 35 = 515 : 5
<=> x + 35 = 103
<=> x = 68
c, 96 - 3 . ( x - 1 ) = 42
<=> 3.(x - 1 ) = 54
<=> x - 1 = 18
<=> x = 19
a. 541 + (218 - x) = 735
218 - x = 735 - 541
x = 218 - 194
x = 24
b. 5.(x + 35) = 515
x + 35 = 515 : 5
x = 103 - 35
x = 68
c. 96 - 3.(x - 1) = 42
3.(x - 1) = 96 - 42
x - 1 = 54 : 3
x = 18 + 1
x = 19
a.\(541+\left(218-x\right)=735.\)
\(218-x=735-541\)
\(218-x=194\)
\(x=218-194\)
\(x=24\)
b.\(5\left(x+35\right)=515\)
\(x+35=515:5\)
\(x+35=103\)
\(x=103-35\)
\(x=68\)
c.\(96-3\left(x-1\right)=42\)
\(3\left(x-1\right)=96-42\)
\(3\left(x-1\right)=54\)
\(x-1=54:3\)
\(x-1=18\)
\(x=18+1\)
\(x=19\)
541 + ( 218 - x ) = 735
218 - x = 735 - 541
218 - x = 194
x = 218 - 194
x = 24
b)
5( x + 35 ) = 515
x + 35 = 515 : 5
x + 35 = 103
x = 103 - 35
x = 68
c)
96 - 3 ( x - 1 ) = 42
3 ( x - 1 ) = 96 - 42
3 ( x - 1 ) = 54
x - 1 = 54 : 3
x - 1 = 18
x = 18 - 1
x = 17