Write an equation to model the situation: Marisol and Kaelani are baking cookies. Kaelani bakes 5 more than 3 times as many cookies as Marisol.
Together they bake 150 cookies. (you DO NOT need to solve the equation)

answer:  

123455421

step-by-step explanation: easy

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116