-7 + 12
5
8 + 3 x 4
20
1/2+1/4
3/4
0.75+0.6
1.35
x+7=15
8
18 - (-7)
((15-3))/4+6
9
3/4-1/6
7/12
25% of 80
3x-5=16
x=7
-6(4) + (-6)
-30
18-2[3+4(2)]
-4
2/3*9/10
3/5
3.5*0.4
1.4
2(x+4)=18
x=5
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