9 November, 02:03
Look at these equations.
9 = 7 + a
a + 8 = b + 5
Use both equations to work out the value of b.
9 November, 03:33
9 November, 03:58
9=7+a ... equation 1
a+8=b+5 ... equation 2
put equation 1 into equation 2
10 = b+5
10-5 = b
meaning value of b=5
Know the Answer?
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» Look at these equations. 9 = 7 + a a + 8 = b + 5 Use both equations to work out the value of b.