Question

află numărul x. a) 214+x=5003; 823-x=597; x-198=5718; b) x×5=85; x×5=85; x÷8=165; 90÷x=9; c) 12÷x=16÷8; x×10=80÷2; x+x=245 + x.

Answer 1

214+X=5003 X=5003-214 X=4789;  823-X=597 X=823-597 X=226  X-198=5718 X=5718+198 X= 5916     b)   X×5=85 X=85:5 X=17  X÷8=165 X=165×8 X=1320  90÷X=9 X=90÷9 X=10  c) 12÷X=16÷8 12÷X=2 X=12÷2 X=6  X×10=80÷2 X×10=40 X=40÷10 X=4  X+X=245+X X+X-X=245 X=245