For which equation is x = 4 not a solution?

Solve the system using substitution {x-2y=0 {4x-3y=15

How would i solve 15=x+7

What is 0.624 an expanded form

For - 3+2y=11 would I add - 3 to 11 to find Y, or would I subtract - 3 from 11?

Helen is 8 years older than Jane. Twenty years ago Helen was three times as old as Jane. How old is each now?

A small factory can produce 245 sofas each day or 315 overstuffed chairs per day. the workers produced 8,820 pieces of furniture to fill an order. if they built sofas for 18 days, how many days of production were needed to build the chairs?

At the beginning of mathematics class, Mrs. Reno gives a warm-up problem. She says, "I am think of a number such that 6 less than the product of 7 and this number is 85." Which number is she thinking of?

Louise is baking cakes to raise money for her track team. The total cost of all of the ingredients for her cakes is $62 She will sell each cake for $10 Write an equation that describes the relationship between the number of cakes Cindy sells, 2, and

Interest earned $70 at 3% for 12 years

6 = a/4 + 2 How to solve this problem