(6+15):x=7 X:(240+20)=2 Z•(108-100)=64 Y:(180-12)=4

Question

(6+15):x=7
X:(240+20)=2
Z•(108-100)=64
Y:(180-12)=4

Answer 1

21÷х=7
х=21÷7
х=3

х÷260=2
х=2×260
х=520

z×8=64
z=64÷8
z=8

y÷168=4
y=4×168
y=672

Answer 2

(6+15):x=7
21:x=7
X=21:7
X=3

X:(240+20)=2
X:260=2
X=2•260x=520

Z•(108-100)=64
Z•8=64
Z=64:8
Z=8

Y:(180-12)=4
Y:168=4
Y=4•168
Y=672

Comments

21÷х=7
х=21÷7
х=3

х÷260=2
х=2×260
х=520

z×8=64
z=64÷8
z=8

y÷168=4
y=4×168
y=672