Question

Fill in each blank with a number so that each row and column makes a true equation.?

Answer 1

-4 0

-1 -2

-2

Explanation:

see first column first, we can know 4x ? +4=0, ?= -1

the third line, we can know 4÷ ? +2=0, ?= -2

the second column should be ?+2-(-2)=0, so ? =-4

then the first line, 4÷(-4)x ? =0, so ?=0

the second line, (-1)x2-?=0, ?= -2