Solve for x: 7x + 15 = 38

A: 23/7
B: 53/7
C: 23
D: 53

A

Step by Step: to isolate 7x, subtract 15 from both sides of the equation. 15-15=0. 38-15=23.

now the equation is 7x=23

finally, to completely isolate the variable, divide 7 from both sides. 7x/7= x. 23/7=23/7 because it cannot be simplified further unless you want it to be a decimal.

so the answer is A, 23/7

If gravity is one third on mars then weight also one third on mars