Question

Three nuts and six bolts have a combined mass of 72g. Four nuts and five bolts have a combined mass of 66g. Find the combined mass of one nut and one bolt

Answer 1

First step is to make your two equations

Answer 2

the 1st equation is

3n + 6b = 72

the easy thing to do here is now divide each term by 3... it will make it easier later

n + 2b = 24


see of you can write the 2nd equation