Mindy bought 2 soft cover notebooks for $4.69 each , 5 packages of ruled notebook paper for $0.79 each , a packages of grid paper for $1.69 , and a set of measuring tools for $4.99

for this case we must solve the following equation:

adding similar terms on the right side of the equation we have:

applying distributive property on the left side of the equation:

we subtract 9x from both sides:

we subtract 10 from both sides:

we divide between -4 on both sides:

x = 6

combine like terms

distributive property

subtraction property of equality

division property of equality