First Problem;
Simplify 4/3x to 4x/3
-4x/3 + 7 = 31
Subtract 7 from both sides
-4x/3 = 31 - 7
Simplify 31 - 7 to 24
-4x/3 = 24
Multiply both sides by 3
-4x = 24 × 3
Simplify 24 × 3 to 72
-4x = 72
Divide both sides by -4
x = -72/4
Simplify 72/4 to 18
x = -18
Seond problem;
Simplify 2/7x to 2x/7
3/7 - 2x/7 = 1/7
Join the denominators
3 - 2x/7 = 1/7
Multiply both sides by 7
3 - 2x = 1/7 × 7
Simplify 1/7 × 7 to 1
3 - 2x = 1
Subtract 3 from both sides
-2x = 1 - 3
Simplify 1 - 3 to -2
-2x = -2
Divide both sides by -2
x = 1
