Question

Which shows the correct solution of the equation a+b=50, when b = 30?

Answer 1

A will equal to 20

Step-by-step explanation: 20+30=50

Answer 2

Answer:

A=20

Step-by-step explanation:

a+b=50

b=30

first substitute for "B"

a+30=50

the solve for "a" by doing inverse operation

a+30-30=50-30

then you simplify the equation

A=20