2G + 4H = 43
2G + 2H = 30 BECOMES G = -1H + 15
Substitute G = -1H + 15 into the first equation.
2(-1H + 15) + 4H = 43
-2H + 30 + 4H = 43
2H + 30 = 43
2H = 13
H = 6.50 / HATS COST $6.50
To find the cost if the gloves put in 6.50 in the first equation.
2G + 4(6.5) = 43
2G + 26 = 43
2G = 17
G = 8.5 / GLOVES COST $8.50.
