(8x n) + 15=7 : 7-15= (-8), (-8)divided by 8= (-1) : n=(-1) : When you have problems like this it helps to work them backwards. Hope you understand this.
Answer:
90
Step-by-step explanation:
900 in groups of 10 would need 90 groups to equal 900.
Answer:
you can simplify rations just like you simplify fractions. Whenever you are able to evenly divide both parts of the ratio with out changing the equation's answer, you are able to.
for example
if it were 3:6, you can simplify this by dividing these both by 3, leaving you with 1:2.
Answer:
x = 5 - 3y and y = - 7/3 + 5x/3
Step-by-step explanation:
uh -
I don't think that's what your looking for
I can try but what is the question.