Question

Afla valoarea lui x din fiecare relatie data.
X+15×15=500-80-60×2
136+107-14+x=248
113×5+x=300×2
(X×1)÷10+90=134×5
40÷2+800÷5=x÷3-40×2
642-32×x=30×30-118×3

Answer 1

x+15x15=500-80-60x2
x+225=800-80-12
x+225=720-12
x+225=708
x=708-225
x=483

136+107-14+x=248
243-14+x=248
229+x=248
x=248-229
x=19

113x5+x=300x2
565+x=600
x=600-565
x=35

(Xx1):10+90=134x5
(Xx1):100=670
(Xx1)=670x100
Xx1=67000
X=67000:1
X=67000

40:2+800:5=x:3-40x2
20+160=x:3-80
180=x:3-80
x:3=180-80
x:3=100
x=100x3
x=300

642-32xX=30x30-118x3
642-32xX=900-354
642-32xX=546
32xX=642-546
32xX=96
x=96:32
x=3

Answer 2

X+15×15=500-80-60×2
X+225=500-80-120
X+225=420-120
X+225=300
X=300-225
X=75

136+107-14+x=248
253-14+x=248
14-x=253-248
14-x=5
X=14-5
X=9

113×5+x=300×2
565+x=600
X=600-565
X=35


(X×1)÷10+90=134×5
(X×1)÷10+90=670
(X×1)÷10=670-90
(X×1)÷10=580
X×1=580×10
X×1=5800
X=5800:1
X=5800

40÷2+800÷5=x÷3-40×2
20+160=X:3-80
180=X:3-80
180+80=X:3
260=X:3
X=260×3
X=780

642-32×x=30×30-118×3
642-32×x=900-354
642-32×X=546
642-546=32×X
96=32×X
X=96:32
X=3