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[add 4 to both sides] 2x=10 Therefore, x=5

find sum of both equations: 14a=42, therefore a=3, substitute 'a' into an equation: (5x3)+2b=23, therefore 2b=8, therfore b=4

From the question, we learn that Adam has take out a loan of £720. He will be paying back the loan in 12 monthly installments of the same amount each time. We are also told he must pay the loan back with ...

sin(x) = 0.5 x = arcsin(0.5) x = 30 degrees , 150 (180-30) degrees

y=mx+c m = gradient of the line c = the y intercept x and y are variables