Question

Look at these equations.

9 = 7+ a
a + 8 = b + 5

Use both equations to work out the value of B ​

Answer 1

B=5

Explanation:

If 7 plus a equals 9 then a would equal 2.

2+8=b+5

10=b+5

Ask yourself what number plus 5 equals 10

B is 5 because 5 plus 5 is 10